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The internal parameters of double-stage absorption heat pump, such as evaporator temperature T0, condenser temperature Tk, absorber temperature Ta, the concentration difference of second-stage generatorΔξ2, the solution heat exchangers efficiency ηand so on, affects on its coefficient of performance and total heat transfer area. Due to analyze the effects of multi-factorial internal parameters, thermodynamic...
The long term stagnation impair the thermal performance. Four type solar collectors have been selected for the stagnation test, The test result of thermal performance before and after stagnation of selected solar collectors will be useful for solar heating and cooling system design and operation.
Energy conservation and rational usage of energy is China's basic national policy. The present steam consumption and heat loss of its pipeline network in Tianjin airport economic development zone is recorded, then zonal steam distribution efficiency is calculated to be 37.56 % by the steam consumption data, and zonal heat loss is in inverse proportion to steam distribution efficiency with factor of...
Weak solution was sprayed on the tube bundle of evaporative condenser. Liquid solution was regenerated utilizing evaporation condensation mechanism. Performance of evaporative condensing regenerator was studied experimentally. The influences of inlet parameters such as air, solution and refrigerant on the performance of regenerator were discussed. The results had great value in the design and improvement...
Four types of double-stage Water-Lithium Bromide absorption heat pump systems were introduced to recover waste heat of about 40°C. Thermodynamic and heat transfer numerical simulation was carried out to predict the performance of these absorption heat pumps. The effects of the driving heat source (steam) input pressure, the waste heat outlet temperature, and the hot water inlet temperature on the...
In connection with the shortness of personalized ventilation, such as complicated duct system construction; small room for changes; and so on, a new IAQ improved ventilation system-reversible ventilation system was put forward. After this system's working principle and features were introduced, it was pointed out that reversible ventilation system was more excellent than personalized ventilation system...
As there are some flaws in classic compositional rules of inference (CRI), analogical reasoning based on similarity degree (ARSM) was proposed. Most of ARSM models do not distinguish the difference between impreciseness derived by fuzziness of fuzzy concepts and uncertainty of observations and rules, which has adverse impact on the inference accuracy. On the base of ARSM computational models, an improved...
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