EXERGETIC EFFICIENCY SPLIT-CONDITIONERS OF “DAIKIN” FIRM
Journal Title: Вісник Національного університету "Львівська політехніка". Серія "Теорія та практика будівництва" - Year 2018, Vol 0, Issue 888
Abstract
In the modern air-conditioning systems with air split-conditioners, equipments, refrigeration agents and processes are occupied the important place, the objective assessment of the degree of its energy perfection which could be defined only on the basis of their exergy analysis. The purpose of the work is to establish exergetic efficiency and losses of exergy in separate elements of the refrigeration machines of the split-conditioners of “Daikin” firm of different cooling capacity. The author’s innovative mathematical model for the exergetic method for analyzing the work of one-stage refrigeration machines with refrigeration agent R410A, which are used in air split-conditioners of “Daikin” firm model series ATXN-MB, for the purpose of computer evaluation their energy efficiency through exergetic output-input ratio (OIR) depending on the various factors influencing their work, was used in this article. The exergetic OIR of air split-conditioners was determined from its exergy balance for 1 kg/s of the cost of the circulating working refrigerant. The exergetic OIR and losses of exergy in separate elements of the air split-conditioners with standard cooling capacity 2050, 2560, 3410, 5480, 6230 W of “Daikin” firm at standard external temperature conditions are determined. It has been established that with increasing of air split-conditioner cooling capacity the exergetic OIR decreases from 23,1 % to 19,4 %, which is by 16,0 %, what is negative. The losses of exergy in all elements of refrigeration machines of the air split-conditioners are installed, which indicates that elements of the air split-conditioner need to be improved to reduce losses of exergy in them, and the overall increasing in the exergetic OIR.
Authors and Affiliations
Volodymyr Labay, Vitaliy Yaroslav, Oleksandr Dovbush
Keywords
Related Articles
- EP ID EP494692
- DOI -
- Views 85
- Downloads 0
МЕТОДИКА ДОСЛІДЖЕНЬ ЗАЛІЗОБЕТОННИХ БАЛОК З ПОШКОДЖЕННЯМИ, ОТРИМАНИМИ ЗА ДІЇ НАВАНТАЖЕННЯ
The research of reinforced concrete beams, in which there is some damage or defects are scare. This is especially applies to studies in which defects arise under the influence of the load, which is due to the complexity...
ДЕФОРМАТИВНІСТЬ ВУЗЛІВ ДЕРЕВ’ЯНИХ КОНСТРУКЦІЙ НА З’ЄДНАННЯХ ТИПУ “СТАЛЬ-ДЕРЕВИНА”
Nowadays design of timber buildings and constructions growth up. It is connected with the dissemination of eco-technologies, efficient energy-saving buildings, rapid constructing, inexpensive solutions and addicting to s...
Wind action on the building faсade and Its influence on ventilation heat losses
A significant factor affecting of indoor climate and energy consumption in buildings is the air exchange rate. In correlation method is used mostly stationary outdoor climatic conditions specified in the standards - cons...
INFLUENCE OF ELEVATED TEMPERATURES ON THE PERFORMANCE OF NANOMODIFIED FIBER-REINFORCED CONCRETES
Exposure to elevated temperatures has detrimental effects on the properties of concretes based on the Portland cement, leading to irreversible changes, up to total failure. One of solutions to improve resistance of struc...
РЕЗУЛЬТАТИ НАТУРНИХ ВИПРОБУВАНЬ КОСИХ В ПЛАНІ ЗАЛІЗОБЕТОННИХ БАЛКОВИХ ПРОЛЬОТНИХ БУДОВ АВТОДОРОЖНЬОГО МОСТА
Reinforced concrete bridges with skew intersection of obstacles (the skew in the plan bridges) with beam cross-ribbed span structures have characteristic constructive differences in the layout the floor beam system compa...