Performance Analysis of Waste Heat Driven Pressurized Adsorption Chiller

Abstract

This article presents the transient modeling and performance of waste heat driven pressurized adsorption chillers for refrigeration at subzero applications. This innovative adsorption chiller employs pitch-based activated carbon of type Maxsorb III (adsorbent) with refrigerant R134a as the adsorbent-adsorbate pair. It consists of an evaporator, a condenser and two adsorber/desorber beds, and it utilizes a low-grade heat source to power the batch-operated cycle. The ranges of heat source temperatures are between 55 to 90 °C whilst the cooling water temperature needed to reject heat is at 30 °C. A parametric analysis is presented in the study where the effects of inlet temperature, adsorption/desorption cycle time and switching time on the system performance are reported in terms of cooling capacity and coefficient of performance.

Increase of thermal efficiency of cogeneration plant by waste heat utilisation with absorption heat pump

“…The working fluids used in ORC systems in many cases have a negative impact on the environment and the system subassemblies [20]. The use of thermal oil and some low-boiling agents in ORC systems may result in a risk of fire, explosion or contamination in the event of system failure.Adsorption and absorption technologies are well known and widely applied for different applications, mostly for separation of industrial gaseous mixtures [21][22][23][24], but also for cooling and heating purposes [25][26][27][28][29]. However, their application for cold or heat generation require appropriate recipient to be available.…”

“…Adsorption and absorption technologies are well known and widely applied for different applications, mostly for separation of industrial gaseous mixtures [21][22][23][24], but also for cooling and heating purposes [25][26][27][28][29]. However, their application for cold or heat generation require appropriate recipient to be available.…”