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Dissertations / Theses on the topic 'Pump energy'

Author: Grafiati
Published: 28 May 2022
Last updated: 30 July 2025

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1

Nilsson, Hanna, and Sandra Johansson. "Renewable energy water pump." Thesis, University of Skövde, School of Technology and Society, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-4171.

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<p>Målet med det här projektet är att bygga ett tillförlitligt pumpsystem som inte är beroende av elektricitet eller icke förnyelsebara bränslen. Pumpen ska klara att pumpa 50-100 liter per dygn till en höjd av 10 meter. Konstruktionen ska placeras i indianbyn El Vergel i Amazonas, Colombia. Pumpen ska pumpa orent vatten till vattenreningstunnor de månader som invånarna i byn inte har tillgång till regnvatten.</p><p>Olika koncept arbetades fram och utvärderades. Det som valdes var en cykeldriven vattenpump, vilken uppfyllde alla krav.</p><p>Pumpens axel är kopplad till bakhjulets fälg med en k
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2

Kuhn, Reinaldo. "On site measurements of kraft pulp pump system efficiency." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/656.

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With increasing energy costs and competitive pressures, interest has increased in surveying installed pumps for potential energy savings. Field pump efficiency tests are required to assess pumping performance and help to identify improvement opportunities. This work concerns the on-site measurements of pulp-suspension pumping efficiency. This involves the measurement of pump head, flow rate and power consumption. Provided that consistent flow measurements are available, it is possible to reliably and non-invasively measure actual pump system efficiencies in pulp suspension flow, with a minimum
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3

Norrman, Marcus, and Felix Monthan. "Heat Pump Data Performance Analysis of Large Scale Ground Source Heat Pump Systems." Thesis, KTH, Energiteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-276072.

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This study aimed at refining and improving current methodology concerning large-scale heat pump performance. This study was performed on two large-scale ground source heat pumps located in Solna (Stockholm). These were connected to an aquifer thermal energy storage system which provided heating and cooling for two office buildings. The heat pumps had been equipped with preliminary sensors from the BMS (Building management system) and been in operation since 2016. In 2019, additional detailed measurement equipment from ClimaCheck was installed to collect comprehensive data from the heat pumps t
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4

Riffat, S. B. "A heat pump incorporating thermochemical energy storage." Thesis, University of Oxford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371559.

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5

FLE, Guillaume. "Extending the pump energy range for a pump-probe system using High Harmonics Generation." Thesis, Uppsala universitet, Molekyl- och kondenserade materiens fysik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-266350.

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6

Mancini, Ferdinando. "ENERGY EFFICIENCY IMPROVEMENTS OF HOUSEHOLD HEAT PUMP SYSTEMS." Doctoral thesis, Università degli studi di Padova, 2011. http://hdl.handle.net/11577/3423220.

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Sustainable development is one of the major challenges that humanity faces today. The rational use of energy resources and the increase of systems efficiency seems to be an important task for all contexts of modern life, from industry to transport and household appliances. The interest on this subject is justified not only by the price of energy, which can potentially increase, but also by the need to reduce emissions of gases, which are thought to be responsible for global warming. This work wants to present innovative solutions for the energy efficiency improvement of household heat pump sy
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7

Vouzas, George. "Low cost solar powered water pump." Master's thesis, University of Cape Town, 1985. http://hdl.handle.net/11427/22328.

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Bibliography: pages 112-118.<br>The study describes the development of a prototype solar energy powered water pump. The system was developed in an attempt to meet the following requirements and constraints: Cheap, convenient and easy manufacture, reliability and low maintanance of the system, no auxiliary power requirements, and minimum running costs. The literature survey indicated that a number of pumping systems have been studied in the past, with variable successes, based on numerous thermodynamic cycles. Our system operates on the combination of two constant volume and two constant pressu
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8

Piechowski, Miroslaw. "A ground coupled heat pump system with energy storage /." Connect to thesis, 1996. http://eprints.unimelb.edu.au/archive/00000724.

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9

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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10

Sandström, Camilla. "Frosting and Defrosting on Air Source Heat Pump Evaporators." Thesis, KTH, Energiteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-299880.

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Air source heat pumps has become increasingly popular for residential households as they are considered an energy efficient alternative on the heating market. The air source heat pumps use the outdoor air as heat source and can operate in cold climates around -15 to -20°C, but as the temperatures drops below 6°C the heat pump experiences problems with frost accumulating on the heat exchanger. The frost collected on the heat exchanger lowers the heat pump performance and can in worst case cause a malfunction. Therefore, frost suppression and defrost strategies are important to increase efficien
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11

Crossman, D. R. "Development of an electric heat pump for domestic use." Thesis, Aston University, 1986. http://publications.aston.ac.uk/15144/.

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This thesis records the design and development of an electrically driven, air to water, vapour compression heat pump of nominally 6kW heat output, for residential space heating. The study was carried out on behalf of GEC Research Ltd through the Interdisciplinary Higher Degrees Scheme at Aston University. A computer based mathematical model of the vapour compression cycle was produced as a design aid, to enable the effects of component design changes or variations in operating conditions to be predicted. This model is supported by performance testing of the major components, which revealed tha
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12

Gummesson, Patrik. "Evaluation of heat pump concepts in ice rinks." Thesis, KTH, Tillämpad termodynamik och kylteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-141149.

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In Sweden there are about 350 ice rinks in operation today which consume approximately 300 GWh per year. The average energy consumption for a Swedish ice rink is approximately 1000 MWh per year. Ice rink dose not only consume energy it also rejects heat. The rejected heat comes from the refrigeration system that cools down the ice floor. The refrigeration system rejects heat around 700 to 1000 MWh per season. The reason for this study is because of the rejected heat which leads to the question how the rejected heat can be used.The object is to find a heat pump concept that can use the rejected
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13

Gromova, O., O. Getman, and T. Markova. "Heat pump energy in the energy and environmental security in the economic development of Ukraine." Thesis, Sumy State University, 2014. http://essuir.sumdu.edu.ua/handle/123456789/36075.

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Volatility of Ukraine on imported energy resources and modern requirements to reduce anthropogenic pressure on the environment threaten the country's economic situation. A similar picture emerges in other countries. In this regard, special attention is paid to the energy policy of the development of heat pump energy. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/36075
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14

Supranto, S. "Heat pump assisted distillation with an external working fluid." Thesis, University of Salford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.483170.

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15

Molyneaux, Glenn Arthur. "Resorption cycle heat pump with ammonia-water working fluid." Thesis, University of Ulster, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326335.

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16

Vahdati, Maria Malahat. "Evaluation of a two fluid ejector-compressor applicable to a domestic heat pump." Thesis, University of Bristol, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295657.

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17

Garnier, Michel. "Trimming of a ground source heat pump system in Saltsjöbaden." Thesis, KTH, Tillämpad termodynamik och kylteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-151419.

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The real performance of ground source heat pumps systems are not precisely highlighted in most cases, especially when it comes to installations older than the contractors guarantee period of 5 years. This project analyses measured data, constructs durability diagrams and establishes an energy balance of a whole heating system located in Saltsjöbaden. The system, composed of 3 heat pumps with a total heating power of 270kW and an oil burner, is used to deliver comfort heat through radiators and ventilation as well as tap warm water production. The installation was originally designed with two o
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18

Vivas, David. "Heat Pump System using Waste Energy for a District Heating Application." Thesis, University of Gävle, Department of Technology and Built Environment, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-630.

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<p>Nowadays, reducing energy usage as well as reducing environmental impacts due to energy efficiency measurements is very common in the industrial sector. The objective of these measurements is to achieve better sustainable energy systems.</p><p>Sandvik Materials Technology (SMT) AB, one of the business areas of the enterprise Sandvik AB, is not an exception in that field.</p><p>The aim of this thesis project is to analyze how to use waste energy from the cooling of a steel plant for an internal district heating (DH) system within the industrial area of SMT AB located in Sandviken, Sweden. In
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19

Menke, Ruben. "Sustainable energy management of water distribution systems through optimised pump scheduling." Thesis, Imperial College London, 2017. http://hdl.handle.net/10044/1/50157.

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Climate change, caused by anthropogenic greenhouse gas emissions, is one of the most important issues of our time. It is often overlooked that up to 5% of a cities electrical energy consumption is required to pump water in the water distribution system. This thesis describes how pump scheduling can contribute to a more sustainable energy management of water distribution systems. The analysis is enabled though a new convex formulation of the pump scheduling problem, which provides theoretical optimality bounds, a requirement for the comparison of different energy management strategies. The prob
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20

Carter, Shane. "Industrial energy efficiency: Using data analytics to monitor excess pump use." Thesis, Carter, Shane (2016) Industrial energy efficiency: Using data analytics to monitor excess pump use. Masters by Coursework thesis, Murdoch University, 2016. https://researchrepository.murdoch.edu.au/id/eprint/40395/.

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Pumping is a common function in almost all industrial processes and it is often a significant contributor to energy consumption and maintenance costs. In large continuous processes there can be many hundreds of pumps installed, which must be monitored and controlled by control room operators along with potentially thousands of other process variables. In a complex operating environment the status of relatively simple devices, such as pumps, can easily be overlooked. This can result in more pumps being run than is required, which in turn results in results in higher energy cost and increased ma
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21

Bengtsson, Peder. "Increasing the value of household appliances by adding a heat pump system." Licentiate thesis, Karlstads universitet, Institutionen för ingenjörs- och kemivetenskaper, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-33596.

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Historically, domestic tasks such as preparing food and washing and drying clothes and dishes were done by hand. In a modern home many of these chores are taken care of by machines such as washing machines, dishwashers and tumble dryers. When the first such machines came on the market customers were happy that they worked at all! Today, the costs of electricity and customers’ environmental awareness are high, so features such as low electricity, water and detergent use strongly influence which household machine the customer will buy. One way to achieve lower electricity usage for the tumble dr
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22

Ramanathan, Sriram. "Sensitivity Analysis and Optimization of the Vertical GSHP (Ground source heat pump)." Thesis, Linköpings universitet, Mekanisk värmeteori och strömningslära, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-171867.

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GSHP (Ground source heat pump), uses geothermal energy which is a form of green and sustainable energy.  Geothermal energy is also a continuous source of energy, unlike wind energy. The results from this thesis work will be applicable for both GSHP that are being used for space heating, and the ones which have a bottom organic Rankine cycle. The bottom organic Rankine cycle and continuous energy production of GSHP make it a potential source for electricity generation.  The GSHP is of various types, in regard to the configuration of the pipe and their setup in the ground and also based on their
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23

Waldstein, Nathaniel A. "Analysis of pump oil and alkanes evaporation." [Tampa, Fla] : University of South Florida, 2008. http://purl.fcla.edu/usf/dc/et/SFE0002786.

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24

Short, Timothy David. "Induced flow water pumping for stand-alone renewable energy systems." Thesis, University of Reading, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314323.

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25

Schreurs, Twan. "Techno-economic analysis of combined heat pump and PV systems in Austria." Thesis, KTH, Tillämpad termodynamik och kylteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-263606.

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With the increasing amount of buildings that are being renovated in Austria, the potential of replacing conventional heating systems with heat pumps increases and thus CO2 emissions could be reduced. Several companies therefore focus on installing combined heat pump and PV systems. The installation of heat pumps and PV systems are being subsidized in Austria with different schemes for every state. The subsidy programs could therefore be clearer and more constant, like the Swedish heat pump subsidies of the last decades. Heat pumps currently cover the heating of over 10% of the gross floor area
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26

Burns, Alexander. "Photobioreactor Design for Improved Energy Efficiency of Microalgae Production." DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1316.

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ABSTRACT Photobioreactor Design for Improved Energy Efficiency of Microalgae Production Alexander Burns The objective of this research was to investigate a new photobioreactor (PBR) design for microalgae production that retains the typical advantages of existing tubular PBRs while reducing power consumption by providing simultaneous culture circulation and gas exchange with airlift alone and no centrifugal recirculating pump. Traditional tubular PBR designs feature a compressed air supply and a centrifugal pump for culture circulation and gas exchange. Circulation and gas exchange in a closed-
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27

Omideyi, T. O. "The economics of heat pump assisted distillation of methanol water mixtures." Thesis, University of Salford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376879.

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28

Dančák, Zdeněk. "Teoreticko-experimentální stanovení měrné energie vířivého čerpadla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229684.

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This master’s thesis deals with side channel pumps. Derivated formula of specific energy is supplemented by other equations and the results of CFD simulation. Further are analysed the mechanism of energy transfer from the impeller and external characteristics of the pump.
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29

Péan, Thibault Q. "Heat pump controls to exploit the energy flexibility of building thermal loads." Doctoral thesis, Universitat Politècnica de Catalunya, 2020. http://hdl.handle.net/10803/669805.

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Smart controls for heat pumps are required to harness the full energy flexibility potential of building thermal loads. A literature review revealed that most strategies used for this purpose can be classified in two categories: simpler rule-based control (RBC), and model predictive control (MPC), a more complex strategy based on optimization and requiring a prior model of the systems. Both RBC and MPC can use external penalty signals to prompt their actions. The price of electricity is most often used for this purpose, leading to strategies of cost reduction. As an alternative penalty signal,
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30

Magagna, Davide. "Oscillating water column wave pump : a wave energy converter for water delivery." Thesis, University of Southampton, 2011. https://eprints.soton.ac.uk/349009/.

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The research presented in this dissertation investigates the development and the performances of a new type of Wave Energy Converter (WEC) aimed to provide water delivery and energy storage in the form of potential energy. The Oscillating Water Column Wave Pump (OWCP) concept was proposed and tested through a series of experimental investigations supported by scientific theory. The OWCP was developed after an extensive study of the existing wave energy technology available, from which it emerged that the Oscillating Water Column (OWC) device could be further implemented for water delivery purp
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Charoenvisal, Kongkun. "Energy Performance and Economic Evaluations of the Geothermal Heat Pump System used in the KnowledgeWorks I and II Buildings, Blacksburg, Virginia." Thesis, Virginia Tech, 2008. http://hdl.handle.net/10919/33942.

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Heating, Ventilating and Air Conditioning Systems (HVAC) are not only one of the most energy consuming components in buildings but also contribute to green house gas emissions. As a result often environmental design strategies are focused on the performance of these systems. New HVAC technologies such as Geothermal Heat Pump systems have relatively high performance efficiencies when compared to typical systems and therefore could be part of whole-building performance design strategies.<P>In collaboration with the Virginia Tech Corporate Research Center, Inc., this research studies the energy c
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Fox, Fred Andrew. "THE DYNAMICS OF A LIQUID PISTON SOLAR POWERED PUMP (COMPUTER MODEL)." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/291657.

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33

McDaniel, Matthew Lee. "Proposed Design for a Coupled Ground-Source Heat Pump/Energy Recovery Ventilator System to Reduce Building Energy Demand." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/33610.

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The work presented in this thesis focuses on reducing the energy demand of a residential building by using a coupled ground-source heat pump/energy recovery ventilation (GSHP-ERV) system to present a novel approach to space condition and domestic hot water supply for a residence. The proposed system is capable of providing hot water on-demand with a high coefficient of performance (COP), thus eliminating the need for a hot water storage tank and circulation system while requiring little power consumption. The necessary size of the proposed system and the maximum and normal heating and cooling
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Bustard, Samuel Kent. "A technical and economic feasibility study for the integration of GSHP technology in the Christchurch rebuild." Thesis, University of Canterbury. Engineering, 2014. http://hdl.handle.net/10092/8943.

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Mr Wayne Tobeck, Director of Southrim Group (SRG), sponsored this 2013 MEM Project titled; A Technical and Economic Feasibility Study for the Integration of GSHP Technology in the Christchurch Rebuild. Following the recent Christchurch earthquakes, a significant amount of land has become too unstable to support traditional building foundations. This creates an opportunity to implement new and unique foundation designs previously unconsidered due to high costs compared to traditional methods. One such design proposes that an Injection Micro-Piling technique could be used. This can also be coupl
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MONTANARO, ANGELA. "Non-equilibrium response of quantum materials to resonant low-energy electronic photo-excitations." Doctoral thesis, Università degli Studi di Trieste, 2022. http://hdl.handle.net/11368/3030498.

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The properties of quantum materials are determined by the delicate balance among many interacting degrees of freedom. The existence of several competing orders makes these systems highly susceptible to even small perturbations that can induce giant responses and eventually change the macroscopic state of the material. The microscopic understanding of the intricate interplay between electrons, ions and spins is thus the key to attain new material functionalities. Pump-probe optical experiments are a powerful tool to study the non-equilibrium states of quantum materials, offering unique insight
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36

Sarı, Özgür Gökmen. "Energy analysis of a solar assisted absorption heat pump for floor heating system." Ankara : METU, 2004. http://etd.lib.metu.edu.tr/upload/12604765/index.pdf.

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37

Marouf, Tawga. "Beräkningsalgoritm för fouling i pelletervärmeväxlare inom plasttillverkning." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-28627.

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Sweden’s energy consumption is divided into three major sectors. One of them is the industry sector. One third of Sweden’s energy consumption is converted in the industries. The chemical industry is one of those industries with great energy needs. This thesis looks into energy efficiency in industry, in particular the plastics manufacturing industry. Efficiency concerning heat exchangers, their fouling resistance and also pumps. This thesis also relates to the industry in the big picture as heat exchangers and pumps are widely used and these has a great energy and environmental efficiency. Thi
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Hemgren, Viktor. "The performance of the Energy Machine : A comparative study of the Energy Machine and a conventional heat pump system." Thesis, Uppsala universitet, Institutionen för teknikvetenskaper, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-206066.

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The Achilles heel of the heat pump technology has for long been the low efficiency occurring during domestic hot water production. The problem is the high condensation pressure needed to reach high temperatures. To produce domestic hot water, the system need to deliver a supply temperature of about 60 °C, to be compared with a supply temperature of around 30-50 °C when heat is delivered to a radiator circuit. This drawback has for long held the heat pump technology back and instead gave room for alternative technologies on the market, like district heating.The Energy Machine is a heat pump sys
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Abdulameer, Saif. "Field Validation of Zero Energy Lab Water-to-Water Ground Coupled Heat Pump Model." Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc849702/.

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Heat pumps are a vital part of each building for their role in keeping the space conditioned for the occupant. This study focuses on developing a model for the ground-source heat pump at the Zero Energy lab at the University of North Texas, and finding the minimum data required for generating the model. The literature includes many models with different approaches to determine the performance of the heat pump. Each method has its pros and cons. In this research the equation-fit method was used to generate a model based on the data collected from the field. Two experiments were conducted for th
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Shankland, Neil J. "Development of an intermittent chemical/vapour-compression heat pump, using a sunspace as a heat source." Thesis, University of Nottingham, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282643.

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Johari, Fatemeh. "Predictive Control Strategies for aHeat Pump System with PV and Electrical Storage with Various Boundary Conditions." Thesis, Högskolan Dalarna, Energiteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:du-28045.

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The idea of nearly zero energy building (nZEB) has been emerged from the global trend toward reduction in fossil fuel consumption and green-house gas emission. In spite of different definitions for nZEB, it is vastly known as a grid connected building with highly reduced energy consumption by means of on-site renewable energy production. Accordingly, heat pumps are one of the remarkably efficient heating and cooling technologies considered as the promising components of the nZEBs, specially, when they are associated with the renewable energy systems. However, due to the interaction between hea
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Thompson, Willis Hope III. "Numerical Analysis of Thermal Behavior and Fluid Flow in Geothermal Energy Piles." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/24013.

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Geothermal heat exchangers are a growing energy technology that improve the energy efficiency of heating and cooling systems in buildings. Vertical borehole heat exchangers (BHE) coupled with ground source heat pumps have been widely developed and researched in the past century. The major disadvantage of BHEs is the initial capital cost required to drill the boreholes. Geothermal energy piles (GEP) were developed to help offset the high initial cost of these systems. A GEP combines ground source heat pump technology with deep earth structural foundations of buildings. GEPs are relatively
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Mok, Soon H. "An investigation of energy-based planned maintenance of offshore drilling mud pumps." Thesis, Robert Gordon University, 1994. http://hdl.handle.net/10059/2136.

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Mud pumps used on offshore installations for drilling operations have been known to experience unpredictable breakdowns, including during critical stages of drilling. The fluid end has been identified as requiring more maintenance work due to component failure, compared to the power end. The most common maintenance strategies in use include breakdown maintenance, time-based maintenance and condition monitoring. Time-based maintenance, based on running hours, is the most commonly preferred method by most, if not all, mud pump operators. However, the nature of drilling operations require pump pe
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Sundqvist, Bo. "Energieffektiva maskinval : Hjälpmedel för projektering av pumpar och blåsmaskiner till avloppsreningsverk." Thesis, Uppsala universitet, Mikrosystemteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-205124.

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Idag fokuserar företag mer och mer på att energieffektivisera sina verksamheter då det finns både ekonomiska och miljömässiga vinster i detta. För att minska energiförbrukningen i samhället är det bra att börja med dess infrastruktur. För att funktionen hos ett avloppsreningsverk ska vara god samtidigt som energikostnaderna hålls nere är bland annat valet av rätt pumpar och blåsmaskiner för den aktuella driftsituationen av största vikt. Att hitta balansen mellan funktion och energieffektivitet hos en kombination av maskiner är dock ett tidskrävande arbete. Genom två fallstudier och matematisk
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Rizzo, Giuseppe, Antonino Bonanno, Giorgio Paolo Massarotti, et al. "Energy efficiency improvement by the application of nanostructured coatings on axial piston pump slippers." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-200187.

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Axial piston pumps and motors are widely used in heavy-duty applications and play a fundamental role in hydrostatic and power split drives. The mechanical power losses in hydraulic piston pumps come from the friction between parts in relative motion. The improvement, albeit marginal, in overall efficiency of these components may significantly impact the global efficiency of the machine. The friction between slipper and swash plate is a functional key in an axial piston pump, especially when the pump (at low rotational speed or at partial displacement) works in the critical areas where the effi
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Cheng, D. Christopher. "Energy savings for an air-to-air residential heat pump using indirect evaporative cooling." [Gainesville, Fla.] : University of Florida, 2006. http://purl.fcla.edu/fcla/etd/UFE0013403.

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Al-samuraaiy, Omar. "Efficiency comparison between Heat Pump andMicro CHP located in two different location inSweden." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-31145.

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Efficiency of a ground source heat pump with thermal capacity of 6 kW determined in two differentlocations in Sweden. In the north side with low average temperature which could go down to -10 ᵒCand in the south side, with low average temperature with +2 ᵒC. The heat pump has refrigerantR407c, which could be connected to both, ground source heat feeding methods the horizontal, andthe vertical model. The heat pump give heat for both space heating and domestic hot watercompared the micro CHP which has thermal capacity of 12.5 kW and electrical capacity of 4.4 kW. Ithas IC engine which means the e
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48

Garber, Denis. "Ground source heat pump system models in an integrated building and ground energy simulation environment." Thesis, University of Cambridge, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648702.

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49

Arding, Karin, and de Betou Siri In. "Making grid capacity available through heat pump control." Thesis, Uppsala universitet, Institutionen för teknikvetenskaper, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-384182.

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In this report the problem of constructing a bus depot with electrical buses despite the lack of grid capacity, was analyzed. A potential solution is investigated, namely smart control of heat pumps in industries. The possibility of allocating grid capacity to the bus depot by reducing power consumption in heat pumps during peak hours, is taken into consideration. The maximum amount of released capacity in an industrial area is calculated through the controlling of heat pumps. This investigation was made through simulations with a simplified building energy model (lumped capacity model) which
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50

Hauat-Elias, Miguel Jorge. "Solar powered water pump improvements." 1988. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_e9791_1988_355_sip1_w.pdf&type=application/pdf.

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