Absorption/adsorption refrigeration Systems considering their high cost of investments (case by case demo projects) and their expected EER

Reference: B.3.3

LEME Mitigation

Replace existing water cooled chiller ,to benefit from free energy produced by waste in industrial process or solar heating panels. As far as solar energy conversion is concerned, the EER should be achievable at the required levels through demo projects.

Industrial plants, hotels, hospitals equipped with solar heating panels

Only when free energy is available (heat recovery or solar energy). Back up systems could be necessary .


Estimated pay back time short term : 2-4 years, medium term: 4-6 years, long term : 6-8 years (*)

long term

Reducing electricity consumption by improving performance of chilled water system including chillers, cooling towers, pumps, energy storage . Energy savings can be obtained by replacing chillers with à higher ESEER (higher Eurovent classification), higher efficiency cooling towers (evaporative or semi-evaporative, fans with VSD), revamping pumps with a more efficient motor IE3 or IE2 vs IE1, and adding variable speed drive (VSD) ; in addition off these energy efficient implementations, enregy savings is generally up to 20 % than performances of an usual chilled water system. Free energy produced by solar panels for generating heat to absorption cooling equipments have been proved having very low SEER on several projects (SEER below 2). Investors should be aware of these poor results before adopting this cooling technology (design simulation need to be done to check the expected performance).