Search results
Results From The WOW.Com Content Network
Travoprost, sold under the brand name Travatan among others, is a medication used to treat high pressure inside the eye including glaucoma. [4] Specifically it is used for open angle glaucoma when other agents are not sufficient. [5] [4] It is used as an eye drop. [4] Effects generally occur within two hours.
An absorption refrigerator is a refrigerator that uses a heat source to provide the energy needed to drive the cooling process. Solar energy, burning a fossil fuel, waste heat from factories, and district heating systems are examples of convenient heat sources that can be used. An absorption refrigerator uses two coolants: the first coolant ...
Refrigerant. A refrigerant is a working fluid used in the refrigeration cycle of air conditioning systems and heat pumps where in most cases they undergo a repeated phase transition from a liquid to a gas and back again. Refrigerants are heavily regulated due to their toxicity, flammability and the contribution of CFC and HCFC refrigerants to ...
Natural refrigerants are considered substances that serve as refrigerants in refrigeration systems (including refrigerators, HVAC, and air conditioning ). They are alternatives to synthetic refrigerants such as chlorofluorocarbon (CFC), hydrochlorofluorocarbon (HCFC), and hydrofluorocarbon (HFC) based refrigerants.
The heat necessary for the dilution is the useful cooling power of the refrigerator, as the process of moving the 3 He through the phase boundary is endothermic and removes heat from the mixing chamber environment. The 3 He then leaves the mixing chamber in the dilute phase. On the dilute side and in the still the 3 He flows through superfluid ...
Dorzolamide. Dorzolamide, sold under the brand name Trusopt among others, is a medication used to treat high pressure inside the eye, including in cases of glaucoma. [3] It is used as an eye drop. [3] Effects begin within three hours and last for at least eight hours. [3] It is also available as the combination dorzolamide/timolol.
Refrigeration. Refrigeration is any of various types of cooling of a space, substance, or system to lower and/or maintain its temperature below the ambient one (while the removed heat is ejected to a place of higher temperature). [1] [2] Refrigeration is an artificial, or human-made, cooling method. [1] [2]
1) However, a pulse-tube refrigerator is not perfectly reversible due to the presence of the orifice, which has flow resistance. Instead, the COP of an ideal PTR is given by ΞΎ PTR = T L T H {\displaystyle \xi _{\text{PTR}}={\frac {T_{\text{L}}}{T_{\text{H}}}}} (2) which is lower than that of ideal coolers. Comparison with other coolers In most coolers gas is compressed and expanded ...