Review of the Capacity Control Capability of Commercial Air Conditioner Units with Variable Speed Compressor

Kouropoulos, Giorgos P.

doi:10.1142/s2010132516300056

Cited by 12 publications

(2 citation statements)

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“…An air cooler is developed using a wet layer of material and it is observed that electrical energy consumption is significantly reduced as compared with traditional coolers in [158]. AC efficiency is upgraded by utilizing variable speed compressor [159]. Related to this in [160], it is described that a partial variation in compressor speed leads to more than 10% improvement in the AC energy efficiency.…”

Section: ) Temperature and Humidity Independent Control (Thic)mentioning

confidence: 99%

Technologies and Practical Implementations of Air-conditioner Based Demand Response

Waseem

Lin

Ding

et al. 2021

Journal of Modern Power Systems and Clean Energy

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Nowadays, the most notable uncertainty for an electricity utility lies in the electrical demand of end-users. Demand response (DR) has acquired considerable attention due to uncertain generation outputs from intermittent renewable energy sources and advancements of smart grid technologies. The percentage of the air-conditioner (AC) load over the total load demand in a building is usually very high. Therefore, controlling the power demand of ACs is one of significant measures for implementing DR. In this paper, the increasing development of ACs, and their impacts on power demand are firstly introduced, with an overview of possible DR programs. Then, a comprehensive review and discussion on control techniques and DR programs for ACs to manage electricity utilization in residential and commercial energy sectors are carried out. Next, comparative analysis among various programs and projects utilized in different countries for optimizing electricity consumption by ACs is presented. Finally, the conclusions along with future recommendations and challenges for optimal employment of ACs are presented in the perspective of power systems.

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Section: ) Temperature and Humidity Independent Control (Thic)mentioning

confidence: 99%

Technologies and Practical Implementations of Air-conditioner Based Demand Response

Waseem

Lin

Ding

et al. 2021

Journal of Modern Power Systems and Clean Energy

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“…Therefore, it is necessary to enhance the heat pump system performance in order to make such pumps more energy efficient. Some of the techniques used to improve the heat pump system performance have been used in research [4][5][6][7][8][9]. Vahid et al [10] published a concise review of different control strategies of saving energy in heat pump systems.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis on the Optimum Control of a Calorimeter with a Heat Recovery Unit for a Heat Pump

Amoabeng

Choi

2018

Energies

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Abstract:Heat pumps are used in many applications, both in households and industries, for space air conditioning and hot water provision. The calorimeter is the equipment used in testing the heat pump system to obtain performance data. In the conventional testing mode and under standard conditions, the calorimeter utilizes a lot of energy through refrigeration and heating systems. In this study, a newly developed calorimeter with a heat recovery unit was used to test the performance of a water-to-water heat pump system. The aim was to minimize the rate of energy used in the conventional calorimeter. Two heat recovery control methods were adopted. In the control (1), the heat recovery unit was used to control the inlet water temperature setpoint for the heat pump indoor heat exchanger, whereas in control (2), the heat recovery unit was used to control the inlet water temperature setpoint for the heat pump outdoor heat exchanger. Tests were executed by varying the operating mode and test conditions. For the heating operating mode, the inlet water setpoint temperatures for the indoor and outdoor heat pump heat exchangers were 40 • C and 5 • C, respectively, whereas for the cooling mode, the inlet water setpoint temperatures for the outdoor and indoor heat pump heat exchangers were 25 • C and 12 • C, respectively. The analyses of the experimental results revealed that the energy saving of the calorimeter with heat recovery was about 71% in cooling mode and 73% in heating mode compared to the conventional calorimeter. Also, the energy consumption of the proposed calorimeter was analyzed based on the control methods. In heating mode, the calorimeter performance was enhanced when the control (2) strategy was used because the energy saving was about 8 to 13% compared to control (1). However, in the cooling mode test, it was the control (1) method that resulted in energy savings of about 6.4 to 21% compared to the control (2) method.

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Method to control an air conditioner by directly measuring the relative humidity of indoor air to improve the comfort and energy efficiency

Lim¹,

Ahn²,

Jeong

2018

Applied Energy

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Review of the Capacity Control Capability of Commercial Air Conditioner Units with Variable Speed Compressor

Cited by 12 publications

References 1 publication

Technologies and Practical Implementations of Air-conditioner Based Demand Response

Technologies and Practical Implementations of Air-conditioner Based Demand Response

Performance Analysis on the Optimum Control of a Calorimeter with a Heat Recovery Unit for a Heat Pump

Method to control an air conditioner by directly measuring the relative humidity of indoor air to improve the comfort and energy efficiency

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