scholarly journals Exergy Analysis of Air Conditioning (AC) System in Suite Room Santika Hotel Yogyakarta

2021 ◽  
Vol 927 (1) ◽  
pp. 012043
Author(s):  
Isnan Yusrian Syas ◽  
Mohammad Kholid Ridwan
Keyword(s):  
Heat Conduction ◽  
Energy Consumption ◽  
Heat Load ◽  
Air Conditioning ◽  
Exergy Analysis ◽  
Electrical Equipment ◽  
Heat Gain ◽  
A Value ◽  
Load Calculation ◽  
Analysis Calculation

Abstract Air Conditioning are major contributors to energy consumption in-suite room Santika Hotel Yogyakarta. A suite room is a choice of rooms with the best facilities compared to other rooms, so comfort is one of the services that must be optimized. The ain is to determine the conduction heat load of various components in the room. Heat conduction load calculation includes heat load through the glass on the east 1253.18 BTU/hr, conduction heat load through the wall to the south 606.14 BTU/hr, solar radiation through glass 1268.48 BTU/hr, heat gain from people 1980 BTU/hr, electrical equipment/lights 2193 BTU/hr and heat gain from ventilation 13053.6 BTU/hr. The total amount of heat gain used in exergy analysis calculation with a value of 3053.16 BTU/hr.

scholarly journals Auditing on Energy Consumption and Thermal Load Calculation of a Building and Optimized Duct Design to Attain Uniform Cooling

2019 ◽  
Vol 8 (4) ◽  
pp. 9179-9185
Keyword(s):  
Energy Consumption ◽  
Thermal Load ◽  
Heat Load ◽  
Air Conditioning ◽  
Weather Conditions ◽  
Hvac System ◽  
Huge Amount ◽  
Basic Step ◽  
Air Handling Unit ◽  
Load Calculation

Heating ventilation and air conditioning (hvac) main goal is to provide thermal comfort and acceptable air quality inside rooms. In large buildings huge amount of energy is wasted due to its weak thermal performance and moderate hvac system. Heat load calculation is a basic step to be considered during designing a hvac system for a building. During heat load calculation weather conditions and occupants of a room are to be considered. Auditing is done on power consumption of a building when two different hvac system are used for distribution of conditioned air and also design a duct. In these paper fan coil unit and air handling unit are compared with each other and investigated how much power is consumed while using each system separately. When fan coil unit is connected with a duct the power consumed by a building is 32.75 kw/hr and when air handling unit is connected with a duct the power consumed is 41 kw/hr. Thus fan coil unit is preferred over air handling unit because it consumes less power and according to that duct is designed using designing tool to attain uniform cooling

scholarly journals Optimization method of hourly heat load calculation model for heat storage air-conditioning heating system in different climate zones

2021 ◽  
pp. 014459872110052
Author(s):  
Yuechao Liu ◽  
Dong Guo ◽  
Min Zhou ◽  
Shanshan Wu ◽  
Dongmei Li
Keyword(s):  
Heat Load ◽  
Air Conditioning ◽  
Heat Storage ◽  
Heating System ◽  
Optimization Method ◽  
Calculation Model ◽  
Climate Zones ◽  
Load Calculation ◽  
Typical Day ◽  
Additional Coefficient

One optimization method of hourly heat load calculation model for heat storage air-conditioning heating system in different climate zones was proposed. A building model is initially built in six different climate zones. Subsequently, the hourly heat load and steady-state design heat load in different climate zones were analyzed. Simultaneously, the hourly heat load additional coefficient of the air-conditioning system with different heating modes on a typical day was compared. It can be found that steady-state design heat load on a typical day is mostly between the peak load and average load of the air-conditioning heating system. Simultaneously, results indicate that the hourly heat load additional coefficient in each climate zone can be fitted to different exponential functions. When the heat storage capacity of building components was changed, the maximum increase of the hourly heat load additional coefficient of the air-conditioning system with intermittent heating was 5%. Thus, the research of the optimal design of hourly heat load calculation method provides a relative reference for performance improvement of the heat storage air-conditioning heating system.

Exergy Analysis of Energy Consumption for Central Air Conditioning System

2014 ◽  
Vol 628 ◽  
pp. 332-337
Author(s):  
Xiao Xia Xia ◽  
Nai Jun Zhou ◽  
Zhi Qi Wang
Keyword(s):  
Energy Consumption ◽  
Air Conditioning ◽  
Exergy Analysis ◽  
Exergy Efficiency ◽  
Dew Point ◽  
Exergy Loss ◽  
Air Conditioning System ◽  
Air Cooler ◽  
Central Air Conditioning ◽  
Air Conditioning Systems

The energy consumption of several central air conditioning systems in summer was researched by the method of exergy analysis. Combined with actual example,the exergy loss of all the equipments and the exergy efficiency of three systems were calculated. The results show that the exergy efficiency of three systems is very low. Relatively speaking, the exergy efficiency of primary return air conditioning system with supplying air in dew point is highest. The equipment of highest exergy loss is air-conditioned room, while the exergy loss of surface air cooler is smallest. Based on this, several improvement measures were proposed to reduce exergy loss and improve exergy efficiency.

Application Analysis of the Water-Source Heat Pump in Hot Summer and Cold Winter

2011 ◽  
Vol 347-353 ◽  
pp. 3036-3040
Author(s):  
Rui Ju ◽  
Qiu Na Cui
Keyword(s):  
Energy Consumption ◽  
Heat Load ◽  
Air Conditioning ◽  
Water Source ◽  
Performance Parameters ◽  
Cold Winter ◽  
Air Conditioning System ◽  
Operation Conditions ◽  
Application Analysis ◽  
Saving Effect

This paper is based on the BIN metrological data and calculates the cold and heat load of the building.According to the performance parameters of the WSHP, the energy consumption and cost of two typical schemes is calculated.Contrast the investment and cost of the SWHP and air conditioning system and discuss the applicability of commercial buildings. Result shows that WSHP costs less than traditional air conditioning in the present operation conditions. Energy-saving effect is remarkable.

scholarly journals ANALYTICAL METHOD TO CALCULATE ROOM COOLING LOAD

2020 ◽  
Vol 7 (8) ◽  
pp. 56-64
Author(s):  
Gedlu Solomon ◽  
Yeshurun Alemayehu Adde
Keyword(s):  
Sea Level ◽  
Latent Heat ◽  
Analytical Method ◽  
Heat Load ◽  
Total Heat ◽  
Cooling Load ◽  
Heat Gain ◽  
Load Calculation ◽  
Building Cooling ◽  
North Latitude

This paper focus on cooling load calculation of the meeting hall [4m*15m*7m] in the location of 8.55 north latitude, East longitude 39.27 and Altitude 1726 m elevation above sea level. The total building cooling load consists of inside design condition of building, outside design condition of building, consider building mater and wall facing to sun and etc.by categorized in to sensible and latent heat gain from ventilation, infiltration and occupants. From different Room heat gain component, the total heat load 21,301.66 w.

Exergy Analysis and Optimization of a Building Air Conditioning System in Tropical Climate

2014 ◽  
Author(s):  
Ricardo Salazar ◽  
Enrico Sciubba ◽  
Claudia Toro
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Air Conditioning ◽  
Energy Use ◽  
Exergy Analysis ◽  
Electric Energy ◽  
Point Of View ◽  
Primary Sources ◽  
Renewable Energy Consumption ◽  
Air Conditioning System

The space conditioning sector is one of the highest exergy consumers and least efficient from the point of view of primary-to-end-use matching. Exergy analysis can be considered as a reliable tool for analyzing and optimizing energy consumption related to building conditioning systems. The present study presents a comparative exergy analysis of the air conditioning system of the TOTAL S.A. offices located in Caracas, Venezuela to finally achieve a reduction of the global electric energy use of the considered building. Starting from the provided thermal cooling load, different possible cooling chains (primary-to-final energy conversion chain) are considered in order to locate the thermodynamically more efficient one from an exergetic point of view. The internal air handler unit, which provides for the cooled and dehumidified air to the building, is fed by the energy obtained from different possible converters of renewable energy primary sources. Specifically, solar and hybrid photovoltaic-thermal (PV/T) panels coupled with an absorption refrigeration machine and with an ejector refrigeration cycle are analyzed. The study that has been carried on leads to identify the most convenient matching between final use and primary sources allowing to substantially reduce the global non-renewable energy consumption of the considered building.

System Optimization and Exergy Analysis of Air Conditioning System for Data Center

2013 ◽  
Vol 291-294 ◽  
pp. 1857-1862
Author(s):  
You Yin Jing ◽  
Qian Qian Liu ◽  
Jiang Jiang Wang
Keyword(s):  
Energy Consumption ◽  
Data Center ◽  
Air Conditioning ◽  
Exergy Analysis ◽  
Operation Mode ◽  
System Optimization ◽  
Maximum Efficiency ◽  
System Operation ◽  
Air Conditioning System ◽  
Suitable Combination

As the air conditioning energy consumption of the date center has increasingly become the focus of attention, reformation for the energy consumption and exploration for the suitable combination model of the air conditioning system have significance in energy saving. This paper makes a program design for the air-conditioning system of a data center in Beijing, makes an analysis of the system operation mode and uses the concept of exergy efficiency to optimize the air conditioning system in order to achieve maximum efficiency.

scholarly journals Exergy Analysis of Energy Consumption for Primary Return Air Conditioning System

2012 ◽  
Vol 24 ◽  
pp. 2131-2137 ◽  
Author(s):  
Xia Xiao-xia ◽  
Wang Zhi-qi ◽  
Xu Shun-sheng
Keyword(s):  
Energy Consumption ◽  
Air Conditioning ◽  
Exergy Analysis ◽  
Air Conditioning System

Cooling Load Estimation to Determine the Proper Capacity of Air Conditioners in the Engineering Building at Engineering Academy of Soroako

2016 ◽  
Vol 836 ◽  
pp. 90-95
Author(s):  
Mukhlis A. Hamarung ◽  
Harman ◽  
Jasman
Keyword(s):  
Air Conditioning ◽  
Work Performance ◽  
Building Materials ◽  
Internal Heat ◽  
Electrical Equipment ◽  
Cooling Load ◽  
Air Conditioner ◽  
Air Conditioners ◽  
A Value ◽  
Lighting Loads

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.

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