Methods of selection of the outdoor air design temperature and enthalpy in the warm period of the year

Malyavina, Elena; Malikova, Olga; Lyong, Pham Van

doi:10.1088/1757-899x/365/2/022057

Cited by 3 publications

(2 citation statements)

References 1 publication

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“…In Vietnam, we do not consider data sets with each parameter separately, but a general set of data on the temperature and enthalpy of outdoor air observed together. From such an array, the highest values of the jointly observed parameters are thrown out, the duration of the joint observation of which corresponds to the same time security coefficient [16,17]. Therefore, the calculated values of the parameters are higher than when the parameters are considered separately.…”

Section: Methodsmentioning

confidence: 99%

Impact of design parameters of outdoor air on the energy performance of air conditioning systems

Malyavina

Malikova

2021

E3S Web Conf.

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The temperature and the enthalpy of the outdoor air are the main parameters of the outdoor environment, the design values of which must be assigned with a sufficient accuracy. Therefore, normalization of the design enthalpy using maps is unacceptable. The design outdoor air parameters for the warm period of the year for air conditioning in different countries are determined from the average multiyear data. However, most countries have adopted much shorter periods of exceeding the actual values of the outdoor air temperature and enthalpy than in Russia. In addition, the coasts of the most developed countries are washed by the waters of the seas and the oceans, which stabilize the weather in these countries, as a result of which the spread of parameter values from year to year in these countries is much less than in Russia having a continental climate. It is proposed to take into account the long-term excess of the calculated parameters in individual years when choosing the design temperature and enthalpy of the outdoor air for the warm period in Russia. The estimated increase in the calculated enthalpy by 4-5 kJ / kg showed that a significant increase in the size of air conditioning units will not be required.

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Section: Methodsmentioning

confidence: 99%

Impact of design parameters of outdoor air on the energy performance of air conditioning systems

Malyavina

Malikova

2021

E3S Web Conf.

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“…In [16][17][18][19] the consistency of the probabilistic statistical climate model was shown as the initial climate information for solving problems in which the process using this data occurs without inertia. Therefore, the article checks the necessary detailing just of this particular model.…”

Section: Introductionmentioning

confidence: 99%

Influence of detailing the climate model on the calculation of energy consumption

2020

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The repeatability of outdoor air temperature and enthalpy combinations in a construction area is a necessary initial information for calculating the energy consumption of air conditioning systems. The most convenient form of presenting climatic data in such calculations is the probabilistic-statistical model, which constitutes a Table, the cells of which show the probabilistic repeatability of the outdoor air temperature and relative humidity. The parameter values given on the vertical and horizontal scales, that form the cell boundaries, can be taken with larger or smaller increments. The paper that served as the basis for this article, provides verification of the initial climatic model detailing experimentally under full-scale conditions in the city of Hanoi (Vietnam). The criterion for the appropriate model detailing was the deviation of the energy consumption estimates of the room cooling system, got experimentally and by calculation. Moreover, the calculations were performed not only on two climate probabilistic and statistical models, but also on the data of direct measurements of the outdoor air temperature and relative humidity with an accuracy of 0.1 for temperature and up to 2 % for relative humidity.

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Development of the technology for creating air conditioning systems in an arid climate (Eritrea)

Galimova

Semenov

Luvam

2022

Refrigeration Technology

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This study aimed to determine the initial data and develop a technology for creating air conditioning systems under the complicated climatic conditions of East Africa. A technique for processing the observational materials is proposed and the corresponding results are stated, which are subsequently used to determine the temperature and humidity of the outdoor and indoor air on the premises of the College of Marine Science and Technology located in the most complicated climatic region of Eritrea. The choice was substantiated, and the calculation and selection of equipment for a special combined environmentally-friendly air conditioning system were performed.

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Methods of selection of the outdoor air design temperature and enthalpy in the warm period of the year

Cited by 3 publications

References 1 publication

Impact of design parameters of outdoor air on the energy performance of air conditioning systems

Impact of design parameters of outdoor air on the energy performance of air conditioning systems

Influence of detailing the climate model on the calculation of energy consumption

Development of the technology for creating air conditioning systems in an arid climate (Eritrea)

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