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Abstract

As a basis for the development of independent solar absorption cooling plants an air cooled ammonia water absorption cooling cycle for solar application was designed, constructed and tested. The basic cycle of 10 kW cooling power is designed for cooling temperatures below 10 degrees C at ambient temperatures above 40 degrees C. In outdoor tests the dynamical and stationary behaviour of the cycle was investigated. The tests demonstrated the possibility of operating the absorption cycle as well as the whole system self-stabilizing without any control devices. A system simulation based on the measured data showed for a site with good solar conditions and extreme ambient temperatures (43 degrees C maximum) the following results: + a part load behaviour deviating only 5 to 10 % from the ideal behaviour + average daily coefficients of performance for the cooling cycle of 0.42 (high direct insolation) to 0.38 (high diffuse radiation) without control and a potential of improvement due to control of 10 % (summer) up to 30 % (winter). The results were utilized to develop a second type cooling cycle of also 10 kW for cold storage below 0 degrees C and ice production. Using natural convection for waste heat deposition this cycle has a reduced auxiliary power consumption of 400 W-el.

Additional information

Authors: WEBER K H M.A.N. MASCHINENFABRIK AUGSBURG-NUERNBERG AG, MUENCHEN (GERMANY), M.A.N. MASCHINENFABRIK AUGSBURG-NUERNBERG AG, MUENCHEN (GERMANY)
Bibliographic Reference: EUR 9533 DE (1984) MF, 93 P., BFR 120, BLOW-UP COPY BFR 465, EUROFFICE, LUXEMBOURG, POB 1003
Availability: Can be ordered online
Record Number: 1989123041100 / Last updated on: 1987-01-01
Category: PUBLICATION
Available languages: de