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2. Mechanical, electrical, and plumbing - Wikipedia

   en.wikipedia.org/wiki/Mechanical,_electrical...

   Heating, cooling, ventilation and exhaustion are all key areas to consider in the mechanical planning of a building. [4] In special cases, water cooling/heating, humidity control or air filtration [5] may also be incorporated. For example, Google's data centres make extensive use of heat exchangers to cool their servers. [6]

3. Thermoelectric temperature control - Wikipedia

   en.wikipedia.org/wiki/Thermoelectric_temperature...

   The efficiency can be determined by the following relation: = where is the temperature of the cooling surface and is the temperature of the heating surface.. The key energy phenomena and the reason of defining a specific use of thermoelectric elements (Figure 1) as heat pump resides in the energy fluxes that those elements allow realizing: [8] [9]

4. Electric heating - Wikipedia

   en.wikipedia.org/wiki/Electric_heating

   Electric heating devices can be built in any required size and can be located anywhere within a plant. Electric heating processes are generally clean, quiet, and do not emit much byproduct heat to the surroundings. Electrical heating equipment has a high speed of response, lending it to rapid-cycling mass-production equipment.

5. Central heating - Wikipedia

   en.wikipedia.org/wiki/Central_heating

   Electrical heating systems occur less commonly and are practical only with low-cost electricity or when ground source heat pumps are used. Considering the combined system of thermal power station and electric resistance heating, the overall efficiency will be less than for direct use of fossil fuel for space heating. [1]

6. Hoare Lea - Wikipedia

   en.wikipedia.org/wiki/Hoare_Lea

   Hoare Lea was founded by Henry Lea in 1862. [1] With an expertise spanning the mechanical and electrical disciplines, he was the first person to advertise himself as a Consulting Mechanical Engineer when he opened his office in Birmingham.

7. Tankless water heating - Wikipedia

   en.wikipedia.org/wiki/Tankless_water_heating

   [clarification needed] Most electrical tankless heaters require AWG 10 or 8 wire, corresponding to 5.5 or 8.5 mm 2 for typical POU (point of use) heaters at North American voltages. Larger whole-house electric units may require up to AWG 2 wire. In gas appliances, both pressure and volume requirements must be met for optimum operation.