Resorption system for cold storage and long-distance refrigeration

A thermochemical resorption refrigeration system was designed and two types of application were investigated: (1) cold storage and (2) long-distance refrigeration. Manganese chloride and ammonium chloride were used as high-temperature salt (HTS) and low-temperature salt (LTS), respectively, and ammonia was utilized as reacting gas. The working performance in terms of coefficient of performance (COP) and specific cooling power (SCP) was assessed at different heat source temperature (140–170 °C) and refrigeration temperature (−15 to 5 °C). The COP obtained at these conditions varied between 0.20 and 0.31, whereas the SCP was from 87 to 125 W per kg of MnCl2 composite sorbent, depending on the working condition and on the type of utilization.

► A resorption system was studied for cold storage and long-distance refrigeration.
► The resorption system using MnCl2–NH3 and NH4Cl–NH3 was for cooling at −15 to 5 °C.
► The COP was 0.20–0.31, and the SCP was 87–125 W/kg during 60 min cooling process.