Write down the functions of the following parts/accessories used with the equipment in
heat and mass transfer laboratory.
a) Compressor with thermal conductivity of building materials equipment.
b) Up/down valve.
c) DC power supply.
d) Cooling section in linear module.
e) Temperature selector in heat conduction study bench.
Answers
Answer:
e is the correct answer tempreter selecter
Answer:
a.)
A bench top accessory designed to allow students to simply and easily investigate the relative thermal conductivities of typical building materials. The utilises a relative method of thermal conductivity measurement based upon an international standard ISO 8301.
The uses a PID controlled flat plate electrical heater and a water cooled flat plate with an integral and highly sensitive heat flowmeter. The specimen under test is sandwiched between the heated and cooled plates and contained in a thermally insulated enclosure to minimise heat losses. The loading system supplied ensures that the same clamping force is applied to all specimens
b.) sprays reliably regardless of whether the can is used upright or upside down; this valve assures correct function and constant spray quality.
c.) is one that supplies a constant DC voltage to its load. Depending on its design, a DC power supply may be powered from a DC source or from an AC source such as the power mains.
d.) The M series linear module is new generation. It consists of an anodized corrosion resistant aluminum profile with integrated roller guide, and pre-tensioned steel reinforced toothed belt.
e.)
The mechanism of the heat transfer design principles would be subsequently treatedaccording to the modes of heat transfer, conduction, convection, and radiation.