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Human comfortness is essential now a day because of the improvement in life style and increasing atmospheric temperature. Electrical air conditioning machines are not most suitable for large buildings because of the higher power consumption and shorter life. Central air conditioning or chilled water system is more reliable for easy operation with a lower maintenance cost for large building. With large buildings such as commercial complex, auditorium, office buildings are provided with central air conditioning system. Educational and research institutions, Hotels, Hospitals, malls etc. are also need human comfortness, as the population of student community increase year by year. The effective design of central air conditioning or a chiller system can provide lower power consumption, capital cost and improve aesthetics of a building. This paper establishes the results of cooling load calculation of different climate conditions by installing dehumidifier. By using CLTD method and Carrier program then the results are compared for a single-story building which is a part of an institute. Cooling load items such as, Electrical equipments, people heat gain, lighting heat gain, infiltration and ventilation heat gain can easily be putted to the MS-Excel programme. The programme can also be used to calculate cooling load due to walls and roofs. And results were compared with the standard data given by ASHRAE and CARRIER Fundamental Hand Books, hourly analysis programme and results are satisfactory. It is also seen that in this paper cooling requirement of without dehumidifier is about 20 % more as compare to with dehumidifier for climate condition of Thiruvanathapuram, Kerala in India. It will be a significant for a large commercial building.
Annually, the climate in most places rises, and as a result, the total energy to provide climate control rises as well. The HVAC industry faces a tough task in developing energyefficient equipment to fulfil growing demands while also decreasing climate change and depletion of the ozone layer. Cooling water central air conditioning systems are used in places where entire major buildings, such as retail malls, airports, and hotels, with multiple floors, must be air conditioned. The project entails the design of a Shandilya Villa Mumbai air conditioning system as well as its criterion for new buildings Establishing a thermal stabilized atmosphere inside a building, such as a kitchen, master bedroom, or dining hall, is the major focus. The planned airconditioning system site is situated on the tower's rooftop patio.
2012 •
The comfort of a workspace for some people is a thing which is not negotiable. It is believed to raise the motivation of people who work in it. A room which is too hot or too cold may cause people working in it unable to concentrate in a manner that their work performance will not be optimal or will cause some of their work delayed and eventually lead to the depression of the workers themselves. From an economic standpoint, this analysis is important because the greater the capacity of the air conditioning system, the greater the power consumption. The purpose of this study is to determine the amount of heat, which is caused by external and internal factors, that arise in the Engineering building at Engineering Academy of Soroako, and to determine the proper capacity of air conditioners which should be installed in the building. To determine the amount of air conditioning capacity needed in the building, an analysis of the cooling load that occurs in the building is necessary. Geographical position, direction of the wall, and building materials are very influential in the absorption of heat from the outside, while the activities of the occupants, lighting loads, and loads of other electrical equipment affects the amount of heat that arise. CLTD / CLF / SCL methods are used in the calculation, and the data required is measured at the peak of the dry season, which occurs in October. Our analysis and calculations obtained that, according to its function, the number of lamps needed in the building are 26 type PL lamps with a power of 23 watts per lamp. The conduction heat gains and maximum daily infiltration occurred at 2pm with a value of 7.51 kW and 1.98 kW, respectively, while the internal heat gains and maximum daily radiation occurred at 3pm with a value of 1.94 kW and 15.41 kW, respectively. It is concluded that the total maximum daily heat gains that arises is 26.50 kW so the capacity of the air conditioner needed is 6.61 kW or rounded to 8.9 PK.
IOP Conf. Series: Materials Science and Engineering 844
Energy performance analysis between two air conditioning systems used in an educational Building in warm-climate Energy performance analysis between two air conditioning systems used in an educational Building in warm-climate2020 •
Energy saving measures, in the design air conditioning systems, are crucial in the development of energy schemes with rational energy consumption. Traditionally, integrated buildings systems have been assessed individually to optimize the energy performance, however they have different parameters that affect energy performance that demands the use of detailed analysis using dynamic simulation. This paper is focused on compare an air conditioning system to be implemented in educational buildings in warm-climate, considering energy schemes provide for a constant air volume (CAV) flow system with a water chiller, while the other integrates a variable refrigerant flow (VRF) system. Adding in each case dedicated outdoor air System (DOAS) units. Energy consumption achieved by each AC system is obtained considering the configuration achieving energy savings of 40% of the annual electricity demand for cooling. Finally, the use of DOAS represents an increase of 20% of total electricity consumption. Keywords: constant air volume; variable refrigerant flow; outdoor air System; energy efficiency. 1. Introduction According to the Energy Information Administration (EIA), estimations, energy consumption will increase approximately in 56% in all regions during the following three decades, however this percentage is led by residential and commercial sector with 51 %, industry with 47%, and transportation with a 2 % [1]. It is expected that in dynamic regions energy consumption will falls in relation to final energy consumption related with emerging economies, due to population growth, lives standard improvement such as countries located in SouthEast Asia and Latin America region. Otherwise, Colombia posts an annual and sustained growth of 3.7% of electric consumption, being the commercial and public services, the fastest-growing sector (5.6%) [2], which is characterized for the high energy consumption of heating, ventilation and air conditioning (HVAC) systems, which is approximately between 40% to 60% of the total electricity consumption of buildings [3,4]. The HVAC systems have been identified as one of the largest energy consumers in developed countries, it is necessary to know the energy efficiency requirements of these equipment, which can be classified into: minimum efficiency of equipment, fluid distribution systems, HVAC control, ventilation, heat recovery and free cooling [5]. As a result of this behavior, mature economies have developed programs that have allowed the establishment of good practices in the construction sector, without compromising the comfort conditions. These good practices require verification through a detailed analysis of factors that affect the final consumption of energy in a building [6-9].
Procedia Computer Science
Estimated Thermal Load and Selecting of Suitable Air-conditioning Systems for a Three Story Educational Building2013 •
2017 •
Room air conditioners are mostly used in a particular room in public buildings. RACs used for both heating as well as cooling purposes. RACs are available in different variants like 1 ton, 2 ton. In this paper, we will determine and find out exact or near about the temperature required for the selected room in which we put AC. This is important for some reasons. Undersized unit AC-This will not cool the room in more summer or hot weather season. Oversized unit AC-This will affect the body comfort by more cooling and also high money. So, by using calculation of room we will able to find out how much we have to give cooling or heating the room. For this we will save energy as well as money and the wastage of heat in the atmosphere.
Air fresheners or AC (Air Conditioning) systems are increasingly becoming a necessity for urban communities and the industrial world in Jakarta. AC functions to cool industrial rooms, offices and homes. The PT CI Electronic Industry Building, has not yet installed an air conditioning system so that the production room is not comfortable for its employees. The purpose of installing air conditioning in the industrial building is to increase employee comfort and productivity. In installing an air conditioning (AC) system in the industrial building, design data and cooling load analysis are required. Therefore it is necessary to study the design of industrial air conditioners at PT CI by calculating the cooling load, calculating the required electrical power in order to determine the size and type of air conditioner needed. The research methodology starts from determining industrial building data, such as what tools and machines are in the room, the area of the room and the room wall ma...
Procedia Engineering
Analysis of Heat Gain in Computer Laboratory and Excellent Centre by using CLTD/CLF/SCL Method2013 •
IOP Conf. Series: Materials Science and Engineering 844
Energy performance analysis between two air conditioning systems used in an educational Building in warm-climate2020 •
Energy saving measures, in the design air conditioning systems, are crucial in the development of energy schemes with rational energy consumption. Traditionally, integrated buildings systems have been assessed individually to optimize the energy performance, however they have different parameters that affect energy performance that demands the use of detailed analysis using dynamic simulation. This paper is focused on compare an air conditioning system to be implemented in educational buildings in warm-climate, considering energy schemes provide for a constant air volume (CAV) flow system with a water chiller, while the other integrates a variable refrigerant flow (VRF) system. Adding in each case dedicated outdoor air System (DOAS) units. Energy consumption achieved by each AC system is obtained considering the configuration achieving energy savings of 40% of the annual electricity demand for cooling. Finally, the use of DOAS represents an increase of 20% of total electricity consumption. Keywords: constant air volume; variable refrigerant flow; outdoor air System; energy efficiency. 1. Introduction According to the Energy Information Administration (EIA), estimations, energy consumption will increase approximately in 56% in all regions during the following three decades, however this percentage is led by residential and commercial sector with 51 %, industry with 47%, and transportation with a 2 % [1]. It is expected that in dynamic regions energy consumption will falls in relation to final energy consumption related with emerging economies, due to population growth, lives standard improvement such as countries located in SouthEast Asia and Latin America region. Otherwise, Colombia posts an annual and sustained growth of 3.7% of electric consumption, being the commercial and public services, the fastest-growing sector (5.6%) [2], which is characterized for the high energy consumption of heating, ventilation and air conditioning (HVAC) systems, which is approximately between 40% to 60% of the total electricity consumption of buildings [3,4]. The HVAC systems have been identified as one of the largest energy consumers in developed countries, it is necessary to know the energy efficiency requirements of these equipment, which can be classified into: minimum efficiency of equipment, fluid distribution systems, HVAC control, ventilation, heat recovery and free cooling [5]. As a result of this behavior, mature economies have developed programs that have allowed the establishment of good practices in the construction sector, without compromising the comfort conditions. These good practices require verification through a detailed analysis of factors that affect the final consumption of energy in a building [6-9].
International Journal of Law and Society
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