low pressure hot water heating
41Multi-stage flash distillation — Water desalination Methods Distillation Multi stage flash distillation (MSF) Multiple effect distillation (MED|ME) Vapor compression (VC) Ion exchange Membrane processes Electrodialysis reversal (EDR) Reverse osmosis (RO) Nanofiltration (NF)… …
42climate — /kluy mit/, n. 1. the composite or generally prevailing weather conditions of a region, as temperature, air pressure, humidity, precipitation, sunshine, cloudiness, and winds, throughout the year, averaged over a series of years. 2. a region or… …
43steel — steellike, adj. /steel/, n. 1. any of various modified forms of iron, artificially produced, having a carbon content less than that of pig iron and more than that of wrought iron, and having qualities of hardness, elasticity, and strength varying …
44metamorphic rock — Any of a class of rocks that result from the alteration of preexisting rocks in response to changing geological conditions, including variations in temperature, pressure, and mechanical stress. The preexisting rocks may be igneous, sedimentary,… …
45Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …
46Thermal power station — Republika Power Plant, a thermal power station in Pernik, Bulgaria …
47Boiler — For the Limp Bizkit song, see Boiler (song). A portable boiler (preserved, Poland) …
48Solar thermal energy — Solar thermal system for water heating in Santorini, Greece …
49technology, history of — Introduction the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …
50Heat exchanger — An interchangeable plate heat exchanger Tubular heat exchan …
