physics2012v2.qxp
B
19/11/2011
12:11
Page 261
lexsolar Thermal Ready-to-go The leXsolar-Thermal kits explain the various technologies for renewable energy production using heat energy. Starting with the basics of solar energy, moving through the applications of solar collectors, the experiments extend to heat-pump technology. The Thermal Ready-to-go is both portable, in its handy aluminium carry-case, and comprehensive, due to the large number of included accessories. This kit is ideally suited for students aged 14-19 years. The most important element is the solar collector, which can be powered either direct from the sun or by using the included infra-red light source. The solar collector converts radiant energy to heat, with water as the energy carrier, and consists of the following components: Special profile frame, with tapped holes for positioning either vertically or inclined
Two removable glass windscreens which help to decrease energy loss via convection
Blackened 6-helix Perspex coil with two ports for simple coupling
Black/ White lacquered collector back (exchangeable)
Styrofoam insulation board (also individually removable) with integrated thermometer
With the heat exchanger, consisting of a copper pipe spiral inside a transparent plastic case, the heat energy can be transmitted from one liquid to another. The water flow through the spiral exchanger is powered by a circulating pump, which can be mounted on the collector. Experiments: Absorption of heat radiation
Energy transfer through convection
Principles of a solar collector
Solar collector with thermo siphon circulator
Solar collector with heat exchanger and pump circulator
Components: 2 x Erlenmeyer flasks, black and white, lacquered, with rubber stoppers and capillary tubes
Optional extra components to broaden experimental range: 1 x Multi-purpose rail/profile rail, 1 m/39.3 inches (502-046)
1 x Heat convection tube 1 x Spirit burner 1 x Solar collector, 260 x 200mm (10.2 x 7.9 inches) 1 x Thermo siphon tank with hose 1 x Thermometer
Alternative Energy
After about 30 minutes of irradiation, a water temperature difference of roughly 20°C (68°F) can be measured. As soon as the elevated tank is connected to the solar collector, using the included hose, a heat convection is caused in the water due to temperature/ density differences and a heat circuit starts up.
1 x Manual 1 x Infrared light source with holder 1 x Stand, stage clamp, clamp and sleeves
Code: 502-042
Email: enquiries@edulab.co.uk
£1,595.00
www.edulab.co.uk
261 PHYSICS