The solar hot-water storage tank
may need periodic inspection and topping off, and various valves, pumps and sensors can sometimes need replacement.
(2000) installed a solar-assisted solid desiccant cooling system with a 20 [m.sup.2] flat-plate solar collector and a 2 [m.sup.3] hot-water storage tank. The system had a cycle configuration such as that shown in Figure 5, excluding the heat exchanger in the process air.
The typical absorption cycle solar cooling system consists of an absorption chiller, a solar collector, a hot-water storage tank, and an auxiliary heater, as illustrated in Figure 6.
In their system, thermal energy produced by the solar collector was stored in a 2.5 [m.sup.3] hot-water storage tank. Their experimental results during the summer period showed that the cooling capacity and the [COP.sub.sr] were 6.5 kW and 0.14, respectively.
Li and Sumathy (2001) developed a single-effect [H.sub.2]O/LiBr absorption chiller of 4.7 kW nominal cooling capacity assisted by a 38 [m.sup.2] array of solar flat-plate collectors with a partitioned hot-water storage tank. In their system, thermal energy produced by the solar collector was stored in a 2.75 [m.sup.3] hot-water storage tank, which is partitioned into two parts in 1:3 volume ratio.
They consist of one or more collectors, insulated piping, a circulating pump, an expansion tank, a hot-water storage tank
, a heat exchanger, solar fluid (usually a solution of water and nontoxic propylene glycol antifreeze), a controller, and some valves and gauges.
A solar heating and cooling system including a 35.17 kW cooling absorption chiller, an evacuated tube solar collector, two hot-water storage tanks
, two cold-water storage tanks, and a 281 kW cooling tower has been designed and built by the researchers.
* Check that all hot-water storage tanks
and pipe work are adequately and fully insulated.
For example, Winn is adding more volume to its hot-water storage tanks
so that they become more efficient, especially during high-use times such as mornings and evenings.