Industrial chemical processes, assignment energy balance presentation for Prof Halimaton Hamdan class. group no.20(akmal, suri,charmine.c.j).

1. Industrial chemical processesgroup 20 Akmal-Surie-Chelsea

2. Question 2 One gram mole of air is heated from 25ºC to 500ºC. Calculate the change in enthalphy. Heating of Air

3. Heating System There are different types of standard heating systems. Central heating is often used in cold climates to heat private houses and public buildings. Such a system contains a boiler, furnace, or heat pump to heat water, steam, or air, all in a central location such as a furnace room in a home or a mechanical room in a large building. The use of water as the heat transfer medium is known as hydronics. The system also contains either ductwork, for forced air systems, or piping to distribute a heated fluid and radiators to transfer this heat to the air. The term radiator in this context is misleading since most heat transfer from the heat exchanger is by convection, not radiation. The radiators may be mounted on walls or buried in the floor to give under-floor heat

5. Question 4 Benzene is cooled in the heat exchanger. How much heat must be removed by the cooling water per hour? Liquefaction of Benzene

6. Heat exchanger A heat exchanger is a device built for efficient heat transfer from one medium to another. The medium may be separated by a solid wall, so that they never mix, or they may be in direct contact

7. Usually, benzene was cooled in the heat exchanger to produced Liquefied Natural Gas (LNG). This process called as Liquefaction Process. In liquefied natural gas (LNG) processes, the gas feed is cooled to very low temperatures (-160° C). The presence of traces of heavy hydrocarbon components may therefore result in crystallization, and thus equipment plugging

8. Single Cycle Liquefaction Process

9. This cycle takes warm, pretreated feed gas and cools and condenses it into an LNG product. To make the cold temperatures required for the LNG, work must be put into the cycle through a refrigerant compressor, and heat must be rejected from the cycle through air or water coolers. In the single cycle process, there is a single working fluid that can be compressed in a single set of compressors driven by a single driver. An example of a single cycle process is a propane refrigeration system