< Previous Next > Air and Water Flowrate Optimisation for a Fan Coil Unit in Heat Pump Systems Ground Source Heat Pumps, Fan Coil, Air and Water Flow Optimisation The degradation in efficiency of auxiliary components in heating/cooling systems when operating at part load is frequently reported. Through the use of variable speed components, the supplied capacity can be reduced to match the required load and hence reduce unnecessary energy consumption. However, for fan coil units, difficulties can arise when optimizing fan and pump speeds at part load. Practically locating optimal water and air flow rates from readily available information and for varying supplied capacities is necessary, in order to reduce the fan coil power consumption. This research attempts to identify whether optimal fan and pump speeds exist for a fan coil unit and how they can be implemented, in a practical manner, in a system control applications. Using an empirical fan coil and pump model, the total power consumption (fan and pump) for different combinations of fan and pump speeds over a range of capacities was calculated.

It was observed that, for a given capacity, an optimal combination of fan and pump speeds exists and there was a significant change in power consumption for different combinations of fan and pump speeds supplying the same capacity. A control strategy is described that utilizes a simple fan coil capacity estimation model, coupled with air and water flow rates, along with nominal design data. The pump speed is optimized using PID control to maintain the space temperature at the chosen set-point, which matches the supplied capacity to the required capacity. At set-time intervals, the capacity estimation model is utilized to optimize the water and air flow rates for the required capacity. The control strategy is evaluated, using a full building simulation model for a daily load profile and is compared to two baseline conditions: for no control of the fancoils/pump combination and for PID circulation control of the pump only. The optimal fan and pump speed control resulted in a 43% and 24% decrease in power consumption with compared to the no control baseline and the PID controlled circulation pump strategy, respectively.

University of Khartoum Dspace A Simulation Model to Determine Energy Savings in an Air Conditioning Office Building Show full item recordpanasonic split ac without outdoor unit Energy saving and energy efficient equipment are attracting a lot of attention due to the escalating energy costs world wide.portable ac units ductless Selection of Heating, Ventilation and Air-Conditioning (HVAC) system for buildings is considered to play a vital role in energycoleman furnace parts calgaryHowever, proper selection of such a system depends primarily on an accurate cooling load calculation method. ASHRAE has developed different methods to estimate the accuracy of cooling load calculations. In this paper a method based on

the finite difference technique is implemented to estimate the cooling load in an office building. The office building is cooled by a ceiling radiant cooling panel (CRCP) coupled with fan coil unit (FCU) using 100% fresh air. The simulation model of the office building showed that significant energy reduction could be obtained when using a ceiling radiant cooling panel Files in this item This item appears in the following Collection(s) Science and Engineering [947] Display Daikin’s history, the way to be an expert in air conditioning. Started with the vision to create quality product for customer by Mr.Akira Yamada, and then Daikin’s development in air conditioning technology all over 90 years. Experience a sense of VRV intelligent system which is solved high ceiling installation problem like in a hotel, office, factory, etc. Respond to various customers’ demands from 6HP to 60HP. Experience a sense of VRV IV-S system which fits to small and compact units, to achieve convenience and space-saving like in a house, condominium, etc., with more energy saving efficiency.

With VRV system, one condenser coil can be connected to more than 20 fan coils or indoor units, so Daikin compiles various fan coils, which support VRV system, for optional applications. Experience a sense of VRV intelligent system which is solved high ceiling installation problem like in a hotel, office, factory, etc. Experience a sense of VRV IV-S system which fits to small and compact units, to achieve convenience and space-saving like in a house, condominium, etc., with more energy saving efficiency. With VRV system, one condenser coil can be connected to more than 20 fan coils or indoor units, so Daikin compiles various fan coils, which support VRV system, for optional applications. Heat Reclaim Ventilation system or HRV system is the system to ventilate air and temperature between indoor and outdoor area, so outdoor air will be cooled down through Heat Exchanger. air will be filtered dirt out at the same time to extend its useful life.

Chiller Plant Management System Simulator Chiller Plant Management System Simulator or CPMS Simulator displays how chiller works in largeIt presents working situation of each component; chiller, pump, cooling tower, including variant cold water state in the system in each cooling situation. Likewise, the water adapt chiller to cooling situation and waste minimum energy. Knowledge a sense of greater pleasure compare to Urusara7 air conditioner which has automatic humidity adjustment operation, cools down without changing the temperature. Airflow blows air up to ceiling level, makes superior and steadier air flow and reduce temperature Compare Daikin air conditioning volume level to other brands in Thailand. You can hear the sound of silence that does not disturb your rest time. Display all models of R32 refrigerant air conditioning with delicate design. An advance technology for health and energy saving which has the best Seasonal Energy Efficiency Ratio (SEER) in Thailand for