All four Solahart collector models I, J, K and L are suitable for Non Residential system applications.
Refer Residential Solar Information Manual for technical data and all other information on these collectors.
The collectors can be arranged in series, parallel or series-parallel formats dependant upon the end user requirements, installation space restrictions and radiation levels for the particular location.
It is important to ensure that the collector array is installed to facilitate complete drain back of the closed circuit fluid into the Heat Store when the circulation pump is OFF.
6.2 PIPE SIZING
The table below gives the recommended minimum pipe sizes relative to the number of collectors to be installed.
Collector flow is based on a rate of 40 litres per hour per square metre, or 16'C temperature rise @ 1000 W/m2 radiation with 75% collector efficiency.
Use this table as a guide to size pipe runs to each bank of collectors.
No. of Collectors Typical Maximum Flow Minimum Pipe Size L/min US gpm NB 0 - 27 21 6 20 28 - 54 67 18 25 55 - 100 124 33 32 101 - 200 250 67 40
For alternative pipe sizes the following graph shows the relationship between the number of collectors, pipe sizes and the pipe head loss due to flow. When selecting from this graph work only between the recommended guide lines drawn on the graph.
6.3 TYPICAL COLLECTOR ARRAYS AND CONNECTIONS
Every collector array installation must be individually inspected and designed to accommodate the required number of collectors and to achieve the optimum orientation for array.
Shown below are five typical collector array configurations which can be used in the design process:
Where hot water is required at a higher than normal temperature eg. dairies etc. a series arrangement is recommended.
ALL COLLECTOR BANKS IN PARALLEL
FOUR COLLECTORS IN SERIES AND PARALLEL CONNECTED
THREE COLLECTOR BANKS IN PARALLEL WITH DRAIN BACK CHECK VALVES
THREE BANKS OF COLLECTORS IN SERIES
ALL COLLECTOR BANKS IN PARALLEL WITH DRAIN BACK VALVES