Performance Analysis of No-Insulation Long Distance Thermal Transportation System Based on Single-Stage Absorption-Resorption Cycle

Abstract

Solution transportation absorption systems are restricted by main defects of high heat source temperature demand and inflexible working pressures which are determined by the condensation temperature. Absorption-resorption heat pump cycles stand out in significantly lowering the demand of heat source temperature as well as multiplying working pressure choices and simplifying system structure. In this paper, a novel solution transportation resorption system is proposed based on the single-stage ARHP cycle. Feasible working pressure combinations and outlet temperature of high pressure-absorber to effect the system are investigated, illustrating the pressure range difference between ARHP and ARHP-based STR system. Thermodynamic parameters such as thermal coefficient of performance, electrical coefficient of performance, heat supply temperature range are revealed by comparing with those of single-stage ARHP cycle. Under the condition that transporting distance is 20 km, maximum COP value of STR system could reach 0.53 when P H / P L value is 700 kPa /405 kPa. The highest supply water temperature could reach 53.84 o C with COP of 0.477. The longest distance is supposed to be no more than 113 km when loading power is 20 MW.