to heat some water
71Micro combined heat and power — or micro CHP is an extension of the now well established idea of cogeneration to the single/multi family home or small office building. Contents 1 Overview 2 Micro CHP systems 3 Engine types and technologies …
72Heavy water — Not to be confused with hard water or tritiated water. Deuterium oxide IUPAC name …
73Air source heat pumps — An air source heat pump is a type of heat pump which use the outside air as a heat source or heat sink to heat or cool an interior space. Air source heat pumps are more efficient than oil, gas, and electric resistance heating in mild climates… …
74Specific heat capacity — Specific heat capacity, also known simply as specific heat, is the measure of the heat energy required to increase the temperature of a unit quantity of a substance by a certain temperature interval. The term originated primarily through the work …
75Electrolysis of water — is the decomposition of water (H2O) into oxygen (O2) and hydrogen gas (H2) due to an electric current being passed through the water. Simple setup for demonstration of electrolysis of water at home. Contents …
76Global Energy and Water Cycle Experiment — The Global Energy and Water Cycle Experiment (GEWEX) is a research program of the World Climate Research Programme intended to observe, comprehend and models the Earth s water cycle. The experiment also observes how much energy the Earth receives …
77Carburetor heat — Carburetor, carburettor, carburator, carburettet heat (usually abbreviated to carb heat ) is a system used in automobile and piston powered light aircraft engines to prevent or clear carburetor icing. It consists of a moveable flap which draws… …
78Portable water purification — devices – also known as point of use (POU) water treatment systems and field water disinfection techniques – are self contained units that can be used by recreational enthusiasts, military personnel, survivalists, and others who must… …
79Extraterrestrial liquid water — Extraterrestrial liquid water, the presence of water in its liquid state, is a subject of wide interest because it is a commonly suggested prerequisite for the emergence of extraterrestrial life. Earth, with oceanic water covering 71% of its… …
80Pressurized water reactor — (PWRs) (also VVER if of Russian design) are generation II nuclear power reactors that use ordinary water under high pressure (superheated water) as coolant and neutron moderator. The primary coolant loop is kept under high pressure to prevent the …
