Category: EuroSun2008-10

Principles of action

The aims of the work are as follows: – to develop a simple self-acting device that will transfer heat downward up to a depth above 10 m. The temperature difference between the warm and cold branches would be only a few degrees, and – to test the performance of the device under laboratory conditions and […]

Experimental Procedure

To compare the dynamic operation of the ISAHP system with the steady-state computer model [4], a 6 hour test with varying glycol temperature was performed. Due to stratification, the temperature at the bottom of the tank remained constant throughout the test providing a constant input temperature for the condenser on the water side. A description […]

Efficiency curve of solar collector

For investigating the effect of the thermal behaviour of the solar collector on the entire system the optimisation process was executed with five different collector efficiency curves representing typical collectors available on the market [4], see Table 2. collector П0 [-] a1 [W/(m2K)] a2 [W/(m2K2)] I 0.825 3 0.013 II 0.815 3.25 0.014 base case […]

Experimental testing

The schematic diagram of the laboratory installation and its photo are shown in Figs. 2 and 3. The warm and cold work vessels are made of cylinders and mounted one above another. The diameter and the height of the cylinders are 110 mm and 140 mm, respectively. Both cylinders are transparent and made of Plexiglas […]

Measurements on a New Developed Compact. Solar Combisystem in Practice

A. ТЬйг and S. Furbo2 1 AEE INTEC, Feldgasse 19, 8200 Gleisdorf, Austria2 Department of Civil Engineering, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark * Corresponding Author, a. thuer@aee. at Abstract Based on elaborated knowledge in international research projects within IEA-SHC Task 26 and the ALTENER project “Solar Combisystems”, a new solar combisystem concept […]