Transfer function

3.3.2. Initial and Boundary Conditions. The pipe is subject to atmospheric pressure Po at time zero this represented initial condition . Boundary condition represented as at the pipe inlet profiles, uniform pressure Pinlet and its value change with concentration of nanofluid [φ%] and inlet temperature T0 = 60 ºC can be measured for all experimental . On the pipe wall, the pressure was atmospheric pressure Po . Moreover, flow and thermal fields are assumed symmetrical with respect to…

COMPARATIVE STUDY ON FRICTION WELDED AND ELECTRON BEAM WELDED JOINTS MADE BY 20VNiMoCr120 STEEL Gabriela IANCULESCU*, Lucia Violeta MELNIC, Marian Andrei GURĂU Ovidius University of Constanta Abstract: In the paper there are presented experimental results concerning mechanical characteristics of friction-welded joints in comparison with electron beam welded joints, made by 20VNiMoCr120 heat-resistant steel, which are part of some elements working at high pressure and temperature. The paper…

1. OBJECTIVES The objectives of the experiment are: • Measurement of creep deformation in 2 materials; lead and polypropylene at room temperature. • Determine how creep deformation of chosen materials can be affected by stress. • Recognise that the two classes of materials show differences in creep behaviour. • Awareness of creep as a design consideration. 2. THEORY 2.1 Introduction Structural materials are often placed in service under a certain applied load at elevated temperatures (eg. wind…

temperature 5 2.7 Effect of sonication time 6 2.8 Effect of the preparation method followed 7 3. Application of Nanofluids: 8 3.1 Heat transfer Intensification 8 3.2 Electronic Applications 8 3.3 Transportation 10 3.4 Industrial cooling applications 11 3.5 Heating buildings and reducing pollution 11 3.6 Nuclear systems cooling 12 3.7 Space and Defense 12 3.8 Mass transfer enhancement 12 4. Energy applications: 13 4.1 Energy storage 13 4.2 Solar absorption 14 4.3 Friction reduction 14…

Evaporation: The rate of heat transfer in the evaporator is calculated using equations 10 and 11 Q_in=(εC)_evap (T_(in,evap)-T_evap ) (10) Where ε is the effectiveness of the evaporator, C is the capacitance rate for the air or chilled water passing through the evaporator. Tevap is the temperature of refrigerant in evaporator and Tin, evap is the temperature of the air or chilled water at the inlet of the evaporator. Equation 11 express Qin in terms of enthalpy. Q_in=m ̇_ref (h_4-h_1)…

There are many definitions of thermal comfort, which depends on the aims and expectations of those who defined it (Chappells, and Shove, 2004). Jiao (2010) stated that, the rate at which human body gain and lose energy, and also the state of comfort is satisfactory once all heat flow in and out of the body are in equilibrium. Also, (ASHRAE 2004), described it as “the state of mind that expresses satisfaction with the surrounding environment.” This definition highlights subjective and…

After working in the roofing industry for over 30 years, the professionals from Technical Foam Corporation have introduced spray foam roofing to many clients throughout Lochbuie, CO. Due to its lightweight and durable nature, this product ensures that the interior of your home remains dry throughout the year. If the whole idea of foam roofing is still new to you, set up an appointment today with Technical Foam Corporation! They’ll be happy to explain the numerable benefits of this roofing…

base assumption of the ‘Principle of Heat Exchange’, which is that the principle only holds true if heat is not lost to its surroundings. Although, the loss of heat to its environment (ex. Desk, air, cup, etc.) was attempted to be minimized by quick transfer of the water and object, and the use of a calorimeter, the data proves that there was a loss of heat as the theoretical temperature was higher than the resulting temperature. 2. For part two, compare your specific heat capacity value of the…

In 1996 Dolly the sheep was born. However, she was not born like most other sheep. Instead, Dolly was cloned from the DNA of an adult sheep. Although Dolly seemed healthy, she died in 2003 after being diagnosed with a progressive lung disease. Dolly was the only sheep out of 277 attempts that made it to a live birth. Would it be safe to take that chance when experimenting with cloning human babies? Some people seem to believe so, and agree with the idea of cloning to have a child. These people…

Although not as immediately critical as the availability of oxygen and glucose, it is important for the nervous system of ectothermic humans to maintain normothermia for effective cellular functioning (Morrison, 2011). The principle source of heat originates from the body. Temperature control mechanisms in humans consist of both core and peripheral processes. Responses elicited occur in a feed-forward manner. Changes in thermoreceptors in primary sensory nerve endings distributed to the skin are…