Results 261 to 270 of about 27,756 (301)

Groundwater heat pump selection for high temperature heating retrofit

Energy and Buildings, 2012
Abstract Retrofitting of fossil fuel powered hot water radiator heating systems of the existing buildings by groundwater heat pumps can provide significant energy savings followed by economic and environmental benefits. The paper describes the procedure for selection of optimal low-temperature groundwater heat pump vapor compression cycle based on ...
Antonijević, Dragi, Manić, Dimitrije, Komatina, Mirko, Rudonja, Nedžad   +3 more
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HIGH TEMPERATURE THERMOACOUSTIC HEAT PUMP [PDF]

, 2012
Thermoacoustic technology can provide new types of heat pumps that can be deployed in dif-ferent applications. A thermoacoustic heat pumps can for example be applied in dwellings to gener-ate cooling or heating. Typically, space and water heating makes up about 60 % of domestics and offices energy consumption.
Spoelstra, S., Tijani, M.E.H.
openaire  

Assessing the decarbonization potential of new generation R290 high-temperature heat pumps for apartment buildings [PDF]

Energy Reports
Electricity driven heat pumps, especially the air-to-water ones, represent a key technology for the decarbonization of existing residential buildings. In particular, new R290 (propane) heat pumps represent a valuable solution for substituting existing ...
Maria Ferrara, Enrico Fabrizio, Stefano P Corgnati   +2 more
exaly   +2 more sources

A concept for an innovative high-temperature heat pump

Energy, 1987
Abstract Concepts for an innovative high-temperature heat pump are described. The preferred concept is a high-temperature analog to the familiar vapor-compression cycle. This concept is innovative in that a solid-state component, beta-alumina solid electrolyte (or BASE), is used to perform the compression function.
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High‐Temperature Heat Pumps for Industrial Use

Chemie Ingenieur Technik
Abstract Compared to heat pumps established in the building sector, high‐temperature heat pumps (HTHPs) suitable for industrial use still face challenges, not only from a mechanical engineering point of view but also regarding integration into existing processes. They need to supply larger amounts of heat at higher temperatures.
Paul‐Michael Bever, Frédéric Bless, Cordin Arpagaus, Stefan S. Bertsch   +3 more
openaire   +1 more source

Energy Analysis of a High-Temperature Chemical Heat Pump

SAE Technical Paper Series, 1999
<div class="section abstract"><div class="htmlview paragraph">The thermal performance of a chemical heat pump using reaction system of calcium oxide/lead oxide/carbon dioxide is demonstrated by experimental results and analyses of a CaO/CO₂ bed reactor.
Yukitaka Kato, Tadashi O-shima, Yoshio Yoshizawa   +2 more
openaire   +1 more source

A High Temperature Heat Pump With Methanol/Water Absorption

Advanced Energy Systems, 1996
Abstract The high temperature lift heat pumps required in many technical applications can not be achieved by conventional single stage absorption units. In recent years as solution of this problem have been proposed the multistage absorption cycles with many heat exchange units, control devices and a higher capital expenditure.
D. A. Kouremenos, E. D. Rogdakis, G. K. Alexis   +2 more
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Selection of working fluids for high-temperature heat pumps

Energy, 1995
Abstract Criteria are described for working fluids in high-temperature heat pumps (HTHPs). Hydrochlorofluorocarbons (HCFCs), hydrofluorocarbons (HFCs) and hydrofluorinated ethers (HFEs) are being considered as working substances for HTHPs. Comparisons are made in terms of ecological and thermophysical properties for working fluids. Three HCFCs (R-123,
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HIGH-TEMPERATURE HEAT PUMP TRANSFORMER

1992
A high-temperature heat pump transformer (10) has a feed line branch (14) and a return line branch (24) which are connected, via pumps (32; 34; 36) or at least one choke element (26), a desorber (12) and a resorber (18) operated at a higher pressure than the latter, to a solution circuit through which a two-component working fluid flows.
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Absorption heat pumps for high and very high temperatures

1990
Le présent travail s'insère dans le cadre d'un programme de recherche consacré aux procédés de stockage et valorisation de l'énergie, utilisant le concept du film ruisselant lors des opérations de séparation et de mélangeage. il traite plus précisément d'un thermo transformateur à haute température de 150-200° c (chapitre II, III et IV) et des pompes à
openaire   +1 more source