District heating operated adsorption heat pumps with earth deposit for multistorey housing, office and institutional buildings - phase 1

Adsorption cooling (not to be confused with absorption cooling) is a relatively new technology which is not yet used in Denmark. Abroad, refrigerating machines based on the adsorption process are available, but require adjustment if applied optimized for heat pump operation. The process of an adsorption heat pump is based on a closed circuit process without compressor, driven by heat and running under vacuum, for example with water as a working agent and silica gel zeolith as adsorbent. The concept, analysed and developed, is to use district heating to run an adsorption heat pump with an earth deposit as heat storage applied for heating and cooling of buildings. By this means, typical savings of 30-40% of the primary energy consumption in a building can be achieved by own production as supplement to implementation of energy efficiency measures. Thereby the energy frame requirements in the new buildings regulations can be cost-efficiently met, as well for new constructions as in relation to buildings under renovation. The project seeks to clarify the following specific questions, among others: 1) How large is the energy saving potential in district heating operated alsorption heat pumps with earth deposits in Denmark? 2) What is the overall economy in district heating operated adsorption heat pumps connected to earth deposits in Denmark? 3) How cant the concept be optimised for adjustment to district heating supplied systems? 4) Which are the barriers for spreading the concept, and how can they be overcome specifically? 5) How can the use of district heating operated adsorption heat pumps connected to earth deposits be promoted in Denmark?