Performance enhancement of a diffusion-absorption refrigerator

Chen, J; Kim, K.J; Herold, Keith E.

doi:10.1016/0140-7007(96)87215-x

Cited by 95 publications

(44 citation statements)

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“…The required minimum height difference of the bubble pump between the rich solution level in the reservoir and the level of the boiling zone was calculated using equations derived by Narayankhedkar and others and Chen [38,39]. This correlation is based on the assumptions that all bubbles are formed at the bottom of the minimum height difference (see Figure 5), so that there is no relative velocity between the weak solution and the refrigerant vapour bubbles in the tube and that friction losses and vapour pressure of the absorbent water are negligible.…”

Section: Gas Bubble Pump Performancementioning

confidence: 99%

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Simulation and experimental investigation into diffusion absorption cooling machines for air-conditioning applications

Jakob¹,

Eicker²,

Schneider³

et al. 2008

Applied Thermal Engineering

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Section: Gas Bubble Pump Performancementioning

confidence: 99%

“…The gas, kerosene or electrically driven Diffusion-Absorption Refrigerators (DAR) were theoretically and experimentally investigated in numerous research projects concerning refrigeration applications [6][7][8][9][10][11][12][13][14][15][16]. Electrolux AB, Sweden (today Dometic AB) brought out the first refrigerator in 1925 [17].…”

Section: Introductionmentioning

confidence: 99%

Simulation and experimental investigation into diffusion absorption cooling machines for air-conditioning applications

Jakob¹,

Eicker²,

Schneider³

et al. 2008

Applied Thermal Engineering

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“…It is well known as the diffusion absorption refrigerating cycle, first presented by Platen and Munters [6]. Chen et al [7] developed a new generator configuration for diffusion absorption refrigerator that consisted of heating elements, a bubble pump and a coaxial heat exchanger. The new generator design demonstrated a significant improvement in the cooling COP of as much as 50%.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Thermo-siphon Generator for Solar Energy LiBr Absorption Refrigerator

Zhang

Lan

Hou

et al. 2010

JEE

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In this paper, a LiBr/H 2 O absorption refrigerator was fabricated and experimentally studied. The refrigerator was driven by solar heated water with an 85℃ of designed temperature. The condenser is water-cooled at the design temperature of 32℃. The refrigeration capability was designed to be 2.3 kW at 7℃. A detailed experimental study was conducted on the thermo-siphon generator, the most important component of this type of refrigerator. The performance of the refrigerator was presented in terms of COP and refrigeration capacity. An analysis was made on the relationship between refrigerator performance and working conditions of thermo-siphon generator. The experimental results show the designed parameters (e.g. refrigeration capacity and refrigeration temperature) were well achieved. But the refrigeration capacity decreased dramatically as the temperature of hot water decreased down to the temperature below 85℃.

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“…Designed as domestic refrigerators for small portable applications and for hotel rooms, they had cooling capacities of a few tens of watts and COP's generally fell between 0.1 and 0.3. The performance of the devices has been assessed during the last half century by various researchers such as Watts and Gulland [3], Stierlin et al [4], Backstrom and Emblik [5] and Chen et al [6]. Jacob and Eicker demonstrated that large scale absorption coolers and chillers in excess of 20 kW could be economically viable if powered by waste heat from industrial processes [7].…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of a Lithium-Chloride Absorption Refrigeration and an Assessment of Its Suitability for Biomass Waste Heat

Oberweis¹,

Al‐Shemmeri²

2012

Applied Sciences

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This paper presents a computer model that will evaluate the performance of a thermo-chemical accumulator. The model is based on operational data such as temperatures and flow rates. The ultimate goal for this model is to estimate the coefficient of performance (COP) of this unit when run on hot water from biomass combustion as the heat source. The outputs of the model are verified by comparing the simulation of the actual machine with published experimental data. The computed results for cooling COP are within 10% of the measured data. The simulations are all run for heat load temperatures varying between 80 °C and 110 °C. As expected, simulation results showed an increase in COP with increased heat source temperatures. The results demonstrate that the potential of combined solar and biomass combustion as a heat source for absorption cooling/heating in climates with low solar radiation can be coupled with biomass waste.

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Performance enhancement of a diffusion-absorption refrigerator

Cited by 95 publications

References 0 publications

Simulation and experimental investigation into diffusion absorption cooling machines for air-conditioning applications

Simulation and experimental investigation into diffusion absorption cooling machines for air-conditioning applications

Experimental Study of Thermo-siphon Generator for Solar Energy LiBr Absorption Refrigerator

Performance Evaluation of a Lithium-Chloride Absorption Refrigeration and an Assessment of Its Suitability for Biomass Waste Heat

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