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Tesi sul tema "Heat recovery"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 25 luglio 2025

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1

Currie, John S. "Absorption heat recovery." Thesis, University of Edinburgh, 1994. http://hdl.handle.net/1842/13527.

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Industrial drying operations are highly energy intensive, usually utilising a primary energy source to provide the necessary heat for the production of a wide range of materials. The use of hot air as the heat and mass transfer medium leads to a resultant loss of energy through the venting of humid exhaust streams. An absorption heat transformer pilot plant was designed and constructed to investigate the potential of recovering this waste heat. Using a two stage cycle, simulated dryer exhaust streams were successfully dehumidified and reheated. The first stage of the transformer employed a dir
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2

Razavinia, Nasimalsadat. "Waste heat recovery with heat pipe technology." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=94983.

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High grade energy, which is primarily derived from hydrocarbon fuels, is in short supply; therefore alternative energy sources such as renewable and recycled energy sources are gaining significant attention. Pyro-metallurgical processes are large consumers of energy. They in return generate large quantities of waste heat which goes un-recovered. The overall theme of this research is to capture, concentrate and convert some of this waste heat to a valuable form. The main objective is to characterize and develop heat pipe technology (some of which originated at McGill) to capture and concentrate
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3

Rojas, Tena Fernando, and Reber Kadir. "Waste Heat Recovery Modellering." Thesis, KTH, Förbränningsmotorteknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-39923.

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SammanfattningI ett tidigare projekt, utfört under våren 2010, modellerades och simulerades en ånggenerator i GT-SUITE för att analysera och jämföra dess resultat med de faktiska motormätningarna. Projektet utfördes på Kungliga Tekniska Högskolan i Stockholm, på uppdrag av företaget som introducerat idén, Ranotor. Konceptet gick ut på att ersätta EGR-kylaren i en lastbilsmotor och med hjälp av Rankine cykeln försöka öka motorns verkningsgrad. Ånggeneratorn består av 48 mikro tuber, som alla innehåller vatten med högt tryck, vattnet värms upp av de varma avgaserna som letts in i ånggeneratorn.
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4

Veijola, T. (Tommi). "Domestic wastewater heat recovery." Bachelor's thesis, University of Oulu, 2017. http://urn.fi/URN:NBN:fi:oulu-201704271600.

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The aim of this thesis is to study and explain the purpose and the function of drain water heat exchangers. The thesis goes over theory behind heat transfer and heat exchangers and presents the general solutions of domestic drain water heat recovery systems. Systems gone over in detail are the different general shower drain water heat recovery systems. Another part of the thesis is a case study of an actual shower drain water heat recovery system of a Finnish household. The purpose of the case study is to study the actual temperature increase of cold water in a drain water heat recovery unit
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5

Hua, Lihong. "Heat exchanger development for waste water heat recovery." Thesis, University of Canterbury. Mechanical Engineering, 2005. http://hdl.handle.net/10092/6459.

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Abstract (sommario):
Hot water plays an import role in modem life. The consumption of hot water represents a significant part of the nation's energy consumption. One way of reducing the energy consumption involved, and hence the cost of that energy, is to reclaim heat from the waste warm water that is discharged to the sewer each day. The potential for economic waste water heat recovery depends on both the quantity available and whether the quality fits the requirement of the heating load. To recover heat from waste water in residential and commercial buildings is hard to achieve in quality because of its low tem
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6

Nyholm, Joakim. "Horizontal wastewater heat recovery heat exchanger, a model." Thesis, KTH, Energiteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-263618.

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The residential and service sector amounts to approximately 40 percent of Sweden’s entire energy demand. In which 90 percent of that is used by households and non-residential buildings. All in all about 80 TWh are used for heating and the provision of hot water in households and non-residential buildings. Since heating has always been such a large part of the energy consumption for buildings in Sweden, it is only natural that there have been several improvements along the way. There’s a new facility just installed last year in the building Pennfäktaren 11, a horizontal wastewater heat recovery
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7

Gillott, Mark C. "A novel mechanical ventilation heat recovery/heat pump system." Thesis, University of Nottingham, 2000. http://eprints.nottingham.ac.uk/12148/.

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Abstract (sommario):
The trend towards improving building airtightness to save energy has increased the incidence of poor indoor air quality and associated problems, such as condensation on windows, mould, rot and fungus on window frames. Mechanical ventilation/heat recovery systems, combined with heat pumps, offer a means of significantly improving indoor air quality, as well as providing energy efficient heating and cooling required in buildings. This thesis is concerned with the development of a novel mechanical ventilation heat recovery/heat pump system for the domestic market. Several prototypes have been dev
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8

Grundén, Emma, and Max Grischek. "Testing the Heat Transfer of a Drain Water Heat Recovery Heat Exchanger." Thesis, KTH, Energiteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-190188.

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This study investigates the change in thermal resistance due to fouling in drain water pipes. As insulation of houses and energy efficiency of appliances improve, the importance of Drain Water Heat Recovery (DWHR) is growing steadily. In older houses, the relative heat loss through drain water is smaller than in newly built houses, but should still be considered. For example, 17 % of the total heat loss in Swedish multi-family houses built before 1940 was transported with the drain water (Ekelin et al., 2006). The average temperature of drain blackwater is between 23 °C and 26 °C (Seybold &amp
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9

Aguilar, Alex. "Harnessing thermoacoustics for waste heat recovery." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/130213.

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Abstract (sommario):
Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, September, 2020<br>Cataloged from student-submitted PDF of thesis.<br>Includes bibliographical references (pages 25-26).<br>Environmental concerns and economic incentives have created a push for a reduction in emissions and an increase in efficiency. The U.S. Department of Energy estimates that 20 to 50% of the energy consumed in manufacturing processes is lost in some form to waste heat. The purpose of this study is to review the waste heat recovery technologies currently available in both commercial an
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10

Finger, Erik J. "Two-stage heat engine for converting waste heat to useful work." online access from Digital Dissertation Consortium, 2005. http://libweb.cityu.edu.hk/cgi-bin/er/db/ddcdiss.pl?3186905.

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11

Abualkaz, Ali Hameed Ali. "The utilization of fluidized beds for heat pipe heat recovery." Thesis, University of Leeds, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235654.

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12

Harman, Thomas David V. "Waste heat recovery in data centers ejector heat pump analysis /." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26594.

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Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Dr. Yogendra Joshi; Committee Member: Dr. S. Mostafa Ghiaasiaan; Committee Member: Dr. Sheldon Jeter. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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13

Nourozi, Behrouz. "Sustainable building ventilation solutions with heat recovery from waste heat." Licentiate thesis, KTH, Hållbara byggnader, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-256567.

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Abstract (sommario):
The energy used by building sector accounts for approximately 40% of the total energy usage. In residential buildings, 30-60% of this energy is used for space heating which is mainly wasted by transmission heat losses. A share of 20-30% is lost by the discarded residential wastewater and the rest is devoted to ventilation heat loss.   The main objective of this work was to evaluate the thermal potential of residential wastewater for improving the performance of mechanical ventilation with heat recovery (MVHR) systems during the coldest periods of year. The recovered heat from wastewater was us
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14

Vestberg, Ola. "Heat recovery from untreated wastewater : A case study of heat recovery from sewerline to district heating network." Thesis, KTH, Energiteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-210224.

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High amounts of heat energy are today deposited into the urban wastewater system. The current society-wide development for energy efficiency has so far barely touched upon the area of wastewater heat conservation, which is why the share of total energy consumption from water use is increasing. Through this master thesis a case study was performed, assessing in particular the heat recovery potential from untreated wastewater in the common sewer line upstream from a wastewater treatment plant (Käppalaverket) for supply onto the local district heating network (Norrenergi) by the use of a heat pum
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15

Meyer, Meyer. "Development of a range of air-to-air heat pipe heat recovery heat exchangers." Thesis, Stellenbosch : University of Stellenbosch, 2004. http://hdl.handle.net/10019.1/16389.

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Thesis (MScIng)--University of Stellenbosch, 2004.<br>ENGLISH ABSTRACT: As the demand for less expensive energy is increasing world-wide, energy conservation is becoming a more-and-more important economic consideration. In light of this, means to recover energy from waste fluid streams is also becoming more-and-more important. An efficient and cost effective means of conserving energy is to recover heat from a low temperature waste fluid stream and use this heat to preheat another process stream. Heat pipe heat exchangers (HPHEs) are devices capable of cost effectively salvaging wasted e
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16

Mateu, Royo Carlos. "Development of High Temperature Heat Pumps for Industrial Waste Heat Recovery." Doctoral thesis, Universitat Jaume I, 2021. http://dx.doi.org/10.6035/14107.2021.744033.

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Abstract (sommario):
One of the major challenges of this decade is developing more sustainable energy systems that contribute to environmental concern, especially climate change mitigation. Extending the operating conditions of the heat pump technology to higher temperatures will allow decarbonising the industrial sector from two slopes: recovering heat from waste heat sources that currently is being rejected to the ambient and produce heat at the required industrial thermal levels that become useful for the industrial processes. Both challenges will make possible reduce the equivalent CO2 emissions of the industr
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17

De, Waal Devin. "Feasibility study of heat pumps for waste heat recovery in industry." Master's thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/10324.

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Includes bibliographical references.<br>A case study was thus carried out at an applicable local industry (brewery) to assess the feasibility of implementing the heat pump for waste heat recovery. Through analysis, the focus was narrowed down from a site wide audit, to a departmental breakdown and then eventually to a specific process; the wort boiler. Three different alternatives were investigated and the performance and economic viability compared; a simple waste heat recovery solution involving a vapour condenser (vq, a mechanical vapour recompression (MVR) heat pump and a thermal vapour re
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18

Lemaire, Lacey-Lynne. "Miniaturized stirling engines for waste heat recovery." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=107690.

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Portable electronic devices have made a profound impact on our society and economy due to their widespread use for computation, communications, and entertainment. The performance and autonomy of these devices can be greatly improved if their operation can be powered using energy that is harvested from the ambient environment. As a step towards that goal, this thesis explored the feasibility of developing miniaturized Stirling engines for harvesting waste heat. A mesoscale (palmtop-size) gamma-type Stirling engine, with a total volume of about 165 cubic centimeters, was manufactured using conve
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19

Ahmad, Mardiana Idayu. "Novel heat recovery systems for building applications." Thesis, University of Nottingham, 2011. http://eprints.nottingham.ac.uk/13852/.

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Abstract (sommario):
The work presented in this thesis will explore the development of novel heat recovery systems coupled with low carbon technologies, and its integration to become one device with multifunction (building integrated heat recovery/cooling/air dehumidifier. In the first part of this thesis, an experimental performance of an individual heat recovery unit using Micro Heat and Mass Cycle Core (MHM3C) made of fibre papers with cross flow arrangement has been carried out. The unit was tested in an environmental control chamber to investigate the effects of various parameters on the performance of heat/e
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20

Liu, Shuli. "A novel heat recovery/desiccant cooling system." Thesis, University of Nottingham, 2008. http://eprints.nottingham.ac.uk/11602/.

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Abstract (sommario):
The global air temperature has increased by 0.74± 0.18 °C since 1905 and scientists have shown that CO2 accounts for 55 percentages of the greenhouse gases. Global atmospheric CO2 has been sharply increased since 1751, however the trend has slowed down in last fifty years in the Western Europe. UK and EU countries have singed the Kyoto agreement to reduce their greenhouse gas emissions by a collective average of 12.5% below their 1990 levels by 2020. In the EU, 40% of CO2 emission comes from the residential energy consumption, in which the HVAC system accounts for 50%, lighting accounts for 15
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21

Holmlund, Kim. "Heat recovery solutions for mine ventilation systems." Thesis, Karlstads universitet, Institutionen för ingenjörs- och kemivetenskaper, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-36565.

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22

Gibbons, Jonathan S. (Jonathan Scott) 1979, and Stephen V. 1982 Samouhos. "Mobile power plants : waste body heat recovery." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/32814.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2004.<br>Includes bibliographical references.<br>Novel methods to convert waste metabolic heat into useful and useable amounts of electricity were studied. Thermoelectric, magneto hydrodynamic, and piezo-electric energy conversions at the desired scope were evaluated to understand their role and utility in the efficient conversion of waste body heat. The piezo-electric generator holds the most promise for the efficient conversion of waste body heat into electricity. In the future, this same device could be e
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23

Wu, Yongguo. "Optimization of heat recovery in glass melting." Case Western Reserve University School of Graduate Studies / OhioLINK, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=case1057602989.

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24

Sapa, Ihor. "Waste heat recovery in the ceramic industry." Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/11827.

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Mestrado em Sistemas Energéticos Sustentáveis<br>Este trabalho tem como objetivo principal constituir um contributo para a sistematização e análise das diferentes opções disponíveis para a recuperação de calor residual na indústria cerâmica, através do desenvolvimento e aplicação de uma metodologia para a incorporação eficiente de tecnologias de recuperação de calor residual. Com base na revisão da literatura, a metodologia proposta fornece bases para a identificação e caracterização das fontes de calor residual presentes na indústria cerâmica, bem como apresenta a revisão e análise de
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25

Engström, Olle. "Optimization of fluid-based heat-recovery systems." Thesis, KTH, Hållbara byggnader, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-257876.

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This report aims to investigate how fluid-based heat-recovery systems for ventilation can be optimized. A high proportion of existing systems operate at lower efficiency than possible, and thus do not reach their full potential in terms of energy savings. The aim of this report has been to find out why, to identify which parameters affect the efficiency of such systems, and to develop a general methodology for optimization. As a method for execution, a literature study and field experiments were chosen. The results from the literature study showed that dimensioned efficiency, fluid flow in the
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26

Olanders, Linn. "Modeling of waste heat recovery system and outdoor swimming pool : Waste heat from hotel kitchen recovered by heat exchanger transferred to pool." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-171880.

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This project was performed to evaluate if waste heat from hotel kitchens is enough to heat outdoor swimming pools in southern Europe or if it can be used as a compliment to another heat source. Another aim was to analyze the simulations and calculations of the pools and the heat recovery system. Then estimate how much annual costs would be reduced when using the exhaust air in the heat recovery system, in comparison with the original heating system. If the project showed positive results the purpose was to select a waste heat recovery system that can integrate with Ozonetech’s ozone generator,
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27

Jamaleddine, Eyad. "Composting bioreactors: heat redistribution and heat recovery system for small compost vessels." Thesis, McGill University, 2014. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=123122.

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Composting is an increasingly popular method of municipal and residential waste management. Uniform composting is necessary to obtain a consistent product and to ensure the destruction of pathogens. It requires that a homogeneous temperature be maintained throughout the compost. To accomplish this, a compost vessel with a heat redistribution system (HRS) was designed, constructed and tested. This system was composed of a heat exchanger, plastic tubing and a copper coil filled with water. The system moved heat from the warmer center of the compost bed to the cooler areas at the outside and bott
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28

Lyu, Sixiang. "Theoretical and Experimental Characterizationof a Soft Polymer Heat Exchanger forWastewater Heat Recovery." Thesis, KTH, Energiteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-280803.

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Abstract (sommario):
Wastewater released from showers, sinks, and washers contains a considerable amount of wasteheat that can be recovered by using a heat exchanger. Conventional metal heat exchangers for wastewater heat recovery have common problems of corrosion, fouling and clogging, which makes it necessary to develop a new type of heat exchanger for such low-grade thermalenergy recovery applications. This study deals with a novel patented polymer heat exchanger (WO2020049233A1) made of soft polyurethane tubes that are capable of oscillation once subjected to external forces. Laboratory tests coupled with theo
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29

Blanquart, Fanny. "Perspectives for Power Generation fromIndustrial Waste Heat Recovery." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-215985.

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30

Chowdhury, Jahedul Islam. "Modelling and control of waste heat recovery system." Thesis, Queen's University Belfast, 2017. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.725593.

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This research focuses on the waste heat recovery (WHR) from low and medium grade heat sources, and its conversion into mechanical rotations and electrical energy using organic Rankine cycle (ORC), in automotive and industrial applications. The research outcomes include: (1) development of subcomponent models including a novel fuzzy based evaporator model of the supercritical ORC-WHR system using thermodynamic and numerical methods in MATLAB/Simulink, (2) overall ORC-WHR integration and complete system simulation to improve thermal and heat recovery efficiency in steady state and dynamic condit
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31

Gavilán, del Amo Asier, and Lopez Ana Alonso. "Drain water heat recovery in a residential building." Thesis, Högskolan i Gävle, Avdelningen för bygg- energi- och miljöteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-19864.

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Abstract (sommario):
Numerous of energy saving measures have been carried out in the Swedishhousing stock since the energy crisis in the 70’s. Additionally, there have been manylow-energy housing projects. However, so far few of these have been followed up aftersome years in operation concerning the energy use. That the energy use stays on a lowlevel is important from a sustainable perspective. The objectives of this study are find a system capable of reduce energy demandand minimize the environmental impact, make the minimum investment with themaximum results and maintain the actual infrastructure of the building
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32

Borgström, Fredrik, and Jonas Coyet. "Waste heat recovery system with new thermoelectric materials." Thesis, Linköpings universitet, Mekanisk värmeteori och strömningslära, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-125716.

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Increasing fuel prices, higher demands on "greener" transports and tougher international emission regulations puts requirements on companies in the automotive industry in improving their vehicle fuel efficiency. On a typical heavy duty Scania truck around 30% of the total fuel energy is wasted through the exhaust system in terms of heat dissipated to the environment. Hence, several investigations and experiments are conducted trying to find ways to utilize this wasted heat in what is called a waste heat recovery (WHR) system. At Scania several techniques within the field of WHR are explored to
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33

Oluleye, Oluwagbemisola Olarinde. "Integration of waste heat recovery in process sites." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/integration-of-waste-heat-recovery-in-process-sites(ebbc2669-2c9b-40be-9eae-8d2252f0286f).html.

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Exploitation of waste heat could achieve economic and environmental benefits, while at the same time increase energy efficiency in process sites. Diverse commercialised technologies exist to recover useful energy from waste heat. In addition, there are multiple on-site and offsite end-uses of recovered energy. The challenge is to find the optimal mix of technologies and end-uses of recovered energy taking into account the quantity and quality of waste heat sources, interactions with interconnected systems and constraints on capital investment. Explicit models for waste heat recovery technologi
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34

Shah, Nikhilkumar. "Vapour compression heat pump driven by diesel engine concept incorporated with heat recovery." Thesis, Ulster University, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.677465.

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Abstract (sommario):
Global issues of greenhouse gas emissions, security of supply and decreasing fossil fuel resources calls for increased use of renewable energy and energy efficiency measures for existing technology. In the domestic sector, main energy consumption occurs due to space heating and hot water which is mostly provided by gas or oil boiler via hydronic central heating system in the UK. In order to diversify fossil fuel usage, reduce emissions and security supply, implementation of efficient technology (e.g. heat pump) along with renewable technology is vital. The heat pump is an efficient technology
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35

Abbas, Sohani Amir. "Waste heat recovery from SSAB’s Steel plant in Oxelösund using a Heat Pump." Thesis, KTH, Energiteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-193047.

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Detta projekt är inriktat på spillvärmepotentialer inom järn och stålindustrin. Högtemperaturvärme-pumpar för medelvarma temperaturkällor har modellerats. SSABs stålverk i Oxelusund har använts som exempel. Järn- och stålindustrin i Sverige är storkonsument av energi, tillsammans med pappers och massaindustrin. Det finns också en stor potential för spillvärmeåtervinning i stålindustrin. Det görs redan i Luleå t ex [1]. Järn och stålindustrins produktionsmetoder och spillvärmeåtervinning, speciellt i USA och Sverige har studerats genom en litteraturstudie. Dagens metoder och potentialer för spi
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36

Tait, Nicole Lynn. "Recovery factors in zero-mean internal oscillatory flows." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA306233.

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Thesis (M.S. in Mechanical Engineering and M.S. in Astronautical Engineering) Naval Postgraduate School, December 1995.<br>"December 1995." Thesis advisor(s): Ashok Gopinath, Oscar Biblarz. Bibliography: p. 61. Also available online.
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37

Duarte, Marta. "Heat recovery units in ventilation : Investigation of the heat recovery system for LB20 and LB21 in Building 99, University of Gävle." Thesis, Högskolan i Gävle, Avdelningen för bygg- energi- och miljöteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-21825.

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Heating, ventilation and air-conditioning (HVAC) systems are widely distributed over the world due to their capacity to adjust some local climate parameters, like temperature, relative humidity, cleanliness and distribution of the air until the desired levels verified in a hypothetical ideal climate. A review of buildings’ energy usage in developed countries shows that in the present this energy service is responsible for a portion of about 20% of the final energy usage on them, increasing up to 50% in hot-humid countries. In order to decrease this value, more and more different heat recovery
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38

Eisa, Mahmoud Abdel Rahman. "Design and optimisation studies on heat pump systems." Thesis, University of Salford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239981.

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39

Engelke, Kylan Wynn. "Novel thermoelectric generator for stationary power waste heat recovery." Thesis, Montana State University, 2010. http://etd.lib.montana.edu/etd/2010/engelke/EngelkeK0510.pdf.

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Abstract (sommario):
Internal combustion engines produce much excess heat that is vented to the atmosphere through the exhaust fluid. Use of solid-state thermoelectric (TE) energy conversion technology is a promising technique to recapture some of the energy lost. The TE effect, discovered in 1821 by Thomas Seebeck, is essentially the solid-state conversion of a temperature gradient into an electric potential. The scope of this work was the design, testing and evaluation of a novel and robust TE generator that is amendable to use in a vast array of convective thermal processes. Seebeck testing of TE elements was c
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40

Low, Robert E. "A variable-capacity heat pump for renewable energy recovery." Thesis, University of Edinburgh, 1991. http://hdl.handle.net/1842/12477.

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This thesis describes research carried out by the author between 1986 and 1990 at the Department of Chemical Engineering, University of Edinburgh, under the supervision of Dr Colin Pritchard. The aim of the research was to devise and evaluate a novel compression heat pump cycle as a potential technology for the utilisation of work and heat from environmental sources in industrial applications. The principal requirement of such a heat pump is that it can accept time-varying inputs of work and heat whilst supplying a controlled heat load at constant delivery temperature to an external load. This
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Silva, Ana Margarida Barradinhas da. "Heat recovery from wastewater: numerical modelling of sewer systems." Master's thesis, Faculdade de Ciências e Tecnologia, 2012. http://hdl.handle.net/10362/8473.

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Dissertação para obtenção do Grau de Mestre em Engenharia do Ambiente, perfil Engenharia Sanitária<br>This thesis was carried as a collaboration of Delft University of Technology (TU Delft) and the companies Waternet and KWR. The main project aims to study the possibility of thermal energy recovery from wastewater, reducing the carbon dioxide (CO2) emissions linked to the energy sector. The present work is based on a previous computational model that was developed to simulate heat recovery from wastewater for constant flow rate and temperature of water. The first goal is to simulate a wast
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O'Connor, Dominic. "A novel heat recovery device for passive ventilation systems." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/15904/.

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The purpose of this study was to assess the performance of a novel heat recovery device for integration with a passive ventilation system. Current heat recovery devices are not suitable for integration with passive ventilation systems due to the high pressure drop experienced by airstreams across the devices. This would result in low ventilation supply rates required for good indoor air quality. The device could be also reconfigured to dehumidify an incoming airstream, lowering the relative humidity of the air. These modifications would improve the air quality and reduce energy demand on mecha
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Kishore, Ravi Anant. "Low-grade Thermal Energy Harvesting and Waste Heat Recovery." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/103650.

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Low-grade heat, either in the form of waste heat or natural heat, represents an extremely promising source of renewable energy. A cost-effective method for recovering the low-grade heat will have a transformative impact on the overall energy scenario. Efficiency of heat engines deteriorates with decrease in hot-side temperature, making low-grade heat recovery complex and economically unviable using the current state-of-the-art technologies, such as Organic Rankine cycle, Kalina cycle and Stirling engine. In this thesis, a fundamental breakthrough is achieved in low-grade thermal energy harvest
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Williams, Christopher Lloyd. "A waste heat recovery strategy for an integrated steelworks." Thesis, Cardiff University, 2015. http://orca.cf.ac.uk/87146/.

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UK energy prices have doubled over the last decade, which has driven the UK Iron and Steel Industry to invest in energy efficient technologies. However, even with these relatively high prices the industry still finds it difficult to build a business case to justify waste heat recovery projects. The Steel Industry has large quantities of waste heat and there are technologies readily available for its capture, but often the issue has been finding a cost effective ‘end use’. Individual schemes incorporating both capturing and an ‘end use’ for the waste heat often incur high capital costs with res
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Thanasoulas, Sotirios. "Evaluation of CO2 Ice rink heat recovery system performance." Thesis, KTH, Energiteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-245233.

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Ice rinks are the largest energy consumers in terms of public buildings due to their simultaneous need of cooling, heating, ventilation, and lighting for different parts of the building which means that these facilities also have a lot of potential for energy saving. Due to the size of the cooling unit in an ice rink the refrigerant charge can become quite high, which potentially has a big impact on the environment. CO2 refrigeration units could cover all these challenges that are linked to ice rink operation. CO2 as a refrigerant has a very low impact on the environment and at the same time i
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Best, Y. Brown Roberto. "An experimental study of heat driven absorption cooling systems." Thesis, University of Salford, 1990. http://usir.salford.ac.uk/14742/.

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The great need for cooling combined with Mexico's large availability of low enthalpy energy from non conventional energy resources such as geothermal energy, solar heat and waste heat from industrial processes, makes it very attractive to utilize these resources for cooling using heat driven absorption systems. The main purpose of the work described in this thesis is to obtain experimental and theoretical data on heat driven absorption cooling systems for the design of large scale systems. Thermodynamic design data have been theoretically derived for heat driven absorption heat pumps and heat
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Andersson, Edwin. "Cooperation for Heat Recovery : A Case Study on Heat Utilization From a Supermarket Refrigeration System." Thesis, KTH, Energiteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-299769.

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The study looks at heat recovery of a refrigeration system in a supermarket where the heat was supplied to apartments in the same building. Such a system requires cooperation between the supermarket owner and the property owner, with both having different motives. By gaining understanding of each other's needs and obligations, cooperation can become easier to achieve, with a result that is more optimal for both actors. Heat recovery for use within the supermarkets has existed for a long time, though supplying the heat to other actors is not as common. Using CO2 as refrigerant is becoming more
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Jennings, Claire Elizabeth. "Recovery of Campylobacter jejuni from cold storage." Thesis, University of Newcastle Upon Tyne, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323454.

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Wang, Weilong. "Mobilized Thermal Energy Storage for Heat Recovery for Distributed Heating." Doctoral thesis, Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-11142.

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Conventional energy sources—oil and electricity—dominate the heat supply market. Due to their rising costs and their negative environmental effects on global climate change, it is necessary to develop an alternative heat supply system featuring low cost, high energy efficiency and environment friendliness. At present, it is often challenging to supply heat to detached buildings due to low energy efficiency and high distribution cost. Meanwhile, significant amounts of industrial waste and excess heat are released into the environment without recycling due to the difficulty of matching time and
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Anwar, Zahid. "Experimental Investigation of heat recovery from R744 based refrigeration system." Thesis, KTH, Tillämpad termodynamik och kylteknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-34049.

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