The file formats and availability are given in Section 5. 2. Table 1 provides the system characteristics. Note that the aperture area is given for the ICS system. Also in the basement of Solar House I is the HP System 10 data acquisition system and the 80386 computer used for data logging. Labtech Notebook is used to control the acquisition, manipulation and storage of data.
All lines are well insulated thermally.
The ICS system consists of two collector modules, each with four evacuated tubes. The inner tube which holds the water is coated with a selective surface of black chrome with an absorptance of 0.93. The two modules are connected in parallel. The heat loss coefficient of these collectors is sufficiently low such that they are able to maintain temperatures above freezing for several days of inclement weather and no freeze protection is required for the modules. However, the pipes to and from the collector are subject to freezing, and consequently, rupture, and are therefore are drained during periods of freezing weather.