Resorption heat pump

Vasiliev, L. L.; Mishkinis, Donatas; Antukh, A. A.; Kulakov, A. G.

doi:10.1016/j.applthermaleng.2003.12.018

Cited by 57 publications

(22 citation statements)

References 10 publications

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“…Moreover, based on the basic thermochemical resorption refrigeration cycle [38][39][40][41] , double-effect thermochemical resorption refrigeration systems can also benefit from the internal heat recovery as proposed by Spin- ner [42] and Goetz [43] . To accomplish such a task, four reactors and three different reactive sorbents were used.…”

Section: Double-effect Thermochemical Sorption Cyclementioning

confidence: 99%

High-efficient thermochemical sorption refrigeration driven by low-grade thermal energy

Wang

2009

Sci. Bull.

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Section: Double-effect Thermochemical Sorption Cyclementioning

confidence: 99%

High-efficient thermochemical sorption refrigeration driven by low-grade thermal energy

Wang

2009

Sci. Bull.

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“…Ammonia vapors move from one adsorber to the other under the action of the pressure drop caused by the temperature drop (sorption potential). Figures 7 and 8 show the scheme and the general view of the resorption heat pump [5,28]. The low-temperature adsorber 1 is filled with activated carbon fiber impregnated with BaCl 2 salt, and the high-temperature adsorber 2 is filled with activated carbon fiber impregnated with NiCl 2 salt -a stronger sorbent compared to BaCl 2 .…”

Section: Thermodynamics and Heat And Mass Exchange In Sorption Heatmentioning

confidence: 99%

“…In the last few years, several variants of utilizing the heat of high-temperature adsorbers for preheating low-temperature ones have been proposed. Heat utilization is realized by means of heat exchangers (heat pipes) or through the mass exchange between adsorbers [26][27][28]. Among the solid-sorbent heat pumps are also hydrogen heat pumps, in which, as sorbents, hydrides of metals are used.…”

Section: Thermodynamics and Heat And Mass Exchange In Sorption Heatmentioning

confidence: 99%

Prospects for employing heat pumps in the Republic of Belarus

Васильев

2005

J Eng Phys Thermophys

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ev UDC 621.577A brief analysis of the possibilities of employing sorption heat pumps in the Republic of Belarus is given. Primary consideration is given to the light-duty heat pumps used for air-conditioning systems with automatic switching from the heating to the cooling state (air/water). One important component of sorption heat pumps is the low-temperature power source, which strongly influences the design of the heat pump in terms of economy and environmental protection.The Republic of Belarus is situated in a geographical zone where the average summer temperature exceeds 20 o C and in winter it is close to 0 o C. Therefore, the application of heat pumps is economically sound mainly for heating, although in a certain period of the summertime they can also be used for air/water cooling. It is known that 90% of the global population need heat pumps for the purposes of heating and cooling. In the present paper, primary consideration is given to the light-duty heat pumps used for air-conditioning systems with automatic switching from the heating to the cooling state (air/water). In international practice, to achieve the above purpose, electrically operated steam compression heat pumps [1], in which, instead of the ecologically dangerous coolant R22, coolants R410A and R407C, as well as propane, propylene, ammonia, and CO 2 are used, are widely used. However, in the last few years, publications devoted to the development and implementation of sorption (absorption and adsorption) gas-operated (flame, gas burners) heat pumps have appeared. Unfortunately, quantity production of sorption heat pumps has been set up so far only in Japan and in the USA, while two or three years ago China began their quantity production as a part of air-conditioning systems for industrial enterprises (absorption heat pumps: heat-transfer material -lithium bromide/water) [2]. At present, of the 9 million heat pumps installed throughout the world, Europe has only 450 thousand, and they are used mainly on the basis of the gas-gas cycle for the purposes of heating in winter and cooling in summer. Of these, 135 thousand heat pumps operate in Central Europe only for air and water heating. The demands for heat pumps are satisfied mainly due to their importation from the USA and Japan. Therefore, national programs of production of heat pumps are welcomed and stimulated in every way. In Switzerland, 40% of new one-and two-family houses are equipped with heat pumps. A similar situation occurs in Austria. For private homes, of great interest are light-duty adsorption heat pumps (zeolites/water, silica gels+salts/water; active carbons/alcohol, etc.) [3][4][5][6]. One important component of sorption heat pumps is the low-temperature energy source, which strongly influences their design in terms of economy and environmental protection. Consequently, the design of a heat source depends in many respects on the chosen low-temperature energy source: atmospheric air, outflowing air of rooms (ventilation release), waters of rivers and lakes and ground waters...

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“…Thermochemical resorption heat transformer has higher-energy upgrade capacity and working reliability when compared with thermochemical adsorption heat transformer, and it has an appropriate operating pressure and thus can avoid the safety problem caused by the high pressure. 12 However, thermochemical adsorption heat transformer has the advantage of stable heat output temperature during energy release process in comparison with thermochemical resorption heat transformer. To further improve the energy upgrade capacity, some advanced thermochemical adsorption or resorption heat transformers were developed using two/ multireactors filled with different salts, 13,14 in which internal heat recovery processes are performed between different reactors.…”

Section: Introductionmentioning

confidence: 99%

A target‐oriented solid‐gas thermochemical sorption heat transformer for integrated energy storage and energy upgrade

Wang

Kiplagat

2012

AIChE Journal

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An innovative target-oriented solid-gas thermochemical sorption heat transformer is developed for the integrated energy storage and energy upgrade of low-grade thermal energy. The operating principle of the proposed energy storage system is based on the reversible solid-gas chemical reaction whereby thermal energy is stored in form of chemical bonds with thermochemical sorption process. A novel thermochemical sorption cycle is proposed to upgrade the stored thermal energy by using a pressure-reducing desorption method during energy storage process and a temperature-lift adsorption technique during energy release process. Theoretical analysis showed that the proposed target-oriented thermochemical sorption heat transformer is effective for the integrated energy storage and energy upgrade, and the low-grade thermal energy can be upgraded from 87 to 171 C using a group of sorption working pair MnCl 2 -CaCl 2 -NH 3 . Moreover, it can give the flexibility of deciding the temperature magnitude of energy upgrade by choosing appropriate sorption working pairs.

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Resorption heat pump

Cited by 57 publications

References 10 publications

High-efficient thermochemical sorption refrigeration driven by low-grade thermal energy

High-efficient thermochemical sorption refrigeration driven by low-grade thermal energy

Prospects for employing heat pumps in the Republic of Belarus

A target‐oriented solid‐gas thermochemical sorption heat transformer for integrated energy storage and energy upgrade

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