2 results listed
In this study, an analysis has been performed to increase the energy efficiency of existing natural gas boilers
which have been adapted to a heating system. For this analysis, it has been investigated to what extent the
plate heat exchangers can be used to reduce the adverse effects of water in the system and to make the
working regime more uniform than the existing conditions. The system consists of 3 natural gas boilers,
circulation pumps and other boiler equipment in the old case and it is necessary to heat 500 tons of water in
a single cycle. Because of the use of well water, limestone formation is observed in the boiler and other
equipment, and the capacity of the reverse osmosis system that meets the reduced water is not enough to
reduce the water hardness. In order to overcome these problems in the system, it has been considered to
separate the suction and discharge lines and create a new cycle with 2 plate exchangers and additional
pumps. Therefore, this new system which has a lower mass ratio is fed with soft and purified water coming
from the treatment system to prevent the formation of limestone and consequently the decrease of the
lifecycle. As a result of the cost analysis of the new system formed by the plate heat exchangers, the payback
period of 6 months has been determined with some acceptances.
International Iron & Steel Symposium
UDCS
Murat Demirhan
Mehmet Ozalp
Mutlucan Bayat
In this study, a gas to gas heat exchanger (recuperator) was designed to increase combustion air temperature entering hot stoves by recovering the heat of flue gas released from hot stoves. Firstly, thermal calculations were done for different flow arrangement to determine the most efficient flow option in terms of heat transfer surface area (AR) and recovered heat (QR). In second step, a static simulation method was utilized to determine outlet temperatures of hot and cold flows and temperature distribution in entire recuperator for steady state condition for different three case studies. Thirdly economical calculations were
performed to monitor total savings (E) of three case studies. Overall, 2823 kW thermal energy and 95 377 $ economic saving potential was discovered by application of a heat recovery system to conventional hot stoves in our study.
International Combustion Symposium
INCOS2018
Erhan Kayabasi
Enes Kilinc
Rahman Calhan
Ahmet Canan
Abdulsamed Tabak
Fikret Furtun
Kamil Arslan
Mehmet Ozkaymak
Mehmet Ozalp