Heat transfer

1. Temperature : A temperature is an objective measurement of hot or cold. It is measured by thermometer (Paul S. Welch,1938). Its most common unit is celcius. It is an important physical property of water because temperature controls the rate of most of the chemical reaction. As temperature affects the growth, reproduction and immunity of living organisms, therefore, drastic temperature changes can be fatal to living organisms. 2. pH : pH is a numeric scale used to specify the acidity or…

Thermosel Stainless Steel Bellow Expansion Joint was designed to utilize the piping system and to monitor the thermal expansion or terminal movement where the utilization of extension circles is undesirable or unreasonable. We offer this Thermosel Stainless Steel Bellow Expansion Joint that can prevent the unnecessary damage caused by vibration, pressure thrust, thermal growth, and other mechanical issues that can affect to the piping system. These Expansion joints are uniquely intended to…

experiment was to determine the thermodynamic properties of the entropy, enthalpy and free energy, as well as the solubility product of borax as a function of temperature from the dissolution of borax in an aqueous solution. Thermodynamics is the study of heat and its transformations. The properties of thermodynamics are entropy, enthalpy and free energy. The properties of thermodynamics can be viewed in terms of spontaneity. Spontaneity is a spontaneous change of a system that occurs by itself…

The goal of this lab was to determine the heat of fusion of ice (or water). According to Chem.Libretexts.org, Heat of fusion is where solids are heated to a specific heat capacity (The number of heat units needed to raise the temperature by 1 degrees) in order to break the bonds that are keeping them attached, which is called the attractive force. This lab also dealt with the concept of the direction in which a temperature follow. According to chemistryexplained.com, temperature is the measure…

3 Ways To Boost Furnace Effectiveness When the warm air inside your house leaks out quickly, your furnace will have to work harder than normal to keep your home warm. Having walls, ceilings, and floors that are properly insulated will go a long way with keeping the hot air in, but they are not enough. Windows are one area where air tends to leak out the most, and if you ignore them, your furnace won’t be operating at optimal efficiency. Double-Pane Windows If your home is older and still has…

to radiate heat, and sweat glands increasing to increase sweat production. b) Two mechanisms the body uses to heat itself are the blood vessels constrict, reducing heat, and muscles beginning to shiver, generating heat. 11. a) The signal in the feedback loop would be the hypothalamus sensing that the body temperature is too high sending signals to cool the body. The response is the blood vessels dilating (chemical signal), and sweat glands increasing sweat production to radiate heat…

Weeks 7 to 9 Assignment Question 1- The difference between heat and temperature is that heat is measured by temperature. Heat travels from areas of higher temperatures to areas of lower temperatures. Temperature indicates level of heat present. (Hammer & Price, 2001, p. 292). Question 2- The principal means by which heat can be transferred are radiation, conduction, and convection. Radiation is the only way the sun's heat reaches earth. Body with temperature above absolute zero will emit…

Abstract Thermo-mechanic treatment consists in utilization of two classic technological proceedings. This type of treatment was applied to the studied high-speed steel (HS2-9-1-8). The made tests wanted to establish the influence on the hardness and wear of the high-temperature thermo-mechanical treatment (HTTMT) applied to studied steel. The application of an additional plastic deformation (the deformation degree between 45 – 75%) influences positive the hardness and wear value. Being a HTTMT,…

3A.2.10 Robustness A method is robust if it is unaffected by small changes in operating conditions. To evaluate the robustness of developed analytical method few parameters were deliberately changed. The parameters included analysis at different temperatures viz. 250C and 300C, at 0.8 and 1.0 mL/min flow rate, using C18 columns from different manufacturers one from Qualisil BDS, USA (4.6 x 250 mm x5µ) and the other from LC-GC, India (4.6 x 250mm x5µ). Each of the three selected factors were…

Solubility property of ozone is dependent on several extrinsic factors such as temperature, pressure, composition of the medium, pH, gas flow rate, etc. Henry’s law says that the pressure of the gas exerts above the liquid is directly proportional to the solubility of the ozone (Bablon et al., 1991). De Smedt et al. (2001) revealed that solubility of ozone is dependent on pH, temperature and type of additives of the aqueous solution. Levanov et al. (2008) found that solubility of ozone decreased…