A device that allows a terminal or computer at one location to communicate with a terminal or computer at a distant location via wire or phone lines.
Wind with a speed between 11 and 16 knots (13 and 18 mph); Beaufort scale number 4.
Wind with a speed between 28 and 33 knots (32 and 38 mph); Beaufort scale number 7.
A method used to estimate building heating loads by assuming that heat loss and gain is proportional to the equivalent heat-loss coefficient for the building envelope.
Compressor controls will run the compressor at varying loads to accommodate demand variations. Running a compressor at less than full load results in a drop in compressor efficiency and thus an increase in operating costs.
The air compressor continues to run and air supply is matched to the demand by partial unloading. This can be accomplished by a regulator controlled floating inlet or by step unloading.
The process of modifying some characteristic of a wave (the carrier) so that it varies in step with the instantaneous value of another wave (the modulating wave) in order to transmit a message. The modified characteristic may be frequency, phase, and/or a ...
The smallest self-contained, environmentally protected structure housing interconnected photovoltaic cells and providing a single dc electrical output; also called a panel.
The water content of a substance (a solid fuel) as measured under specified conditions being the: Dry Basis, which equals the weight of the wet sample minus the weight of a (bone) dry sample divided by the weight of the dry sample times 100 (to get percen ...
A device designed to enable accumulated liquids to be held for draining in a compressed air system.
Concentration of a solution expressed in moles of solute divided by 1000 g of solvent.
Aqueous solution that contains 1 mole (gram-molecular weight) of solute in 1 L of the solution.