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BS EN 13203-3:2022

BS EN 13203-3:2022

$142.49

Gas-fired domestic appliances producing hot water – Assessment of energy consumption of solar supported gas-fired appliances

Published By Publication Date Number of Pages
BSI 2022 26
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This document is applicable to solar supported gas-fired appliances producing domestic hot water. It applies to a system marketed as single unit or a fully specified system that: – has a gas heat input not exceeding 70 kW; – has a hot water storage tank capacity not exceeding 500 l; – is equipped with at least one solar collector; – is, with regard to the solar hydraulic circuit, considered as a forced circulation system (definition according to EN ISO 9488:1999). The appliances covered by this document are described in Annex E (normative). This document does not apply to thermo-siphon or integral collector storage tank systems according to definitions given by EN ISO 9488:1999. NOTE In principle, the energy consumption of thermo-siphon solar preheat systems and integral collector storage tank preheat systems can also be assessed based on this document. One appropriate procedure for that purpose is to calculate the temperature level of the domestic hot water withdrawn from the thermal solar system for the reference conditions specified in this standard by using the numerical system model and the thermal solar system performance parameters according to ISO 9459-5. Based on the temperature level of the hot water withdrawn from the store the energy consumption of the gas appliance is determined. This determination can either be done by means of calculations or by performing a test according to EN 13203 2:2022 and using instead of the cold water inlet temperature the hot water temperature withdrawn from the store. This document is not intended to assess the performance: – of the solar collector(s), which should comply with EN 12975-1:2006+A1:2010 and EN 12975-2:2006; – of thermal solar systems and components, which should comply with EN 12976-1:2021 and EN 12976-2:2019. EN 13203-1:2015 sets out in qualitative and quantitative terms the performance in delivery of domestic hot water for a selected variety of uses. It also gives a presenting the information to the user. The present document sets out a method for assessing the energy performance of a solar supported appliance. It specifies a few daily tapping cycles for each domestic hot water use, kitchen, shower, bath and a combination of these, together with corresponding test procedures including information about the available solar radiation. It enables the energy performances of different gas-fired appliances to be compared and matched to the needs of the user.

PDF Catalog

PDF Pages PDF Title
2 undefined
8 1 Scope
2 Normative references
9 3 Terms and definitions
10 4 General test conditions
4.1 Reference conditions
4.2 Measurement uncertainties
4.2.1 General
4.2.2 Steady-state conditions
4.3 Test conditions
4.3.1 General
4.3.2 Test room
4.3.3 Water supply
4.3.4 Initial adjustment of the appliance
11 4.3.5 Conditions for the determination of the maximum load profile
4.3.6 Electrical supply
4.3.7 Solar circuit
4.3.8 Solar thermal input
5 Determination of the energy consumption of the solar supported gas-fired appliance
5.1 General
5.2 Load profiles and solar cycle
12 5.3 Determination of the energy recovered by the useful water
5.4 Calculation of gas energy
5.4.1 Calculation of daily gas energy consumption in summer mode
13 5.4.2 Calculation of daily gas energy consumption in winter mode
5.4.3 Daily gas energy consumption seasonally weighted
5.5 Calculation of daily electrical energy consumption
5.6 Measurement of energy consumption in standby mode
5.6.1 General
5.6.2 Calculation of daily gas energy consumption in standby mode
5.6.3 Calculation of daily auxiliary electrical energy consumption in standby mode
5.7 Determination of daily auxiliary energy consumption in the off mode
6 Determination of ration of wasted water to total water
7 Eco design related products data
7.1 Water heating energy efficiency
7.2 Smart control factor (SFC) and smart
7.3 Annual fuel consumption (AFC)
7.4 Annual electricity consumption (AEC)
14 Annex A (informative)Test conditions
15 Annex B (informative)Examples of test rig and measurement devices
16 Annex C (informative)Declaration of the Maximum Load Profile
17 Annex D (informative)Solar collector simulator
D.1 General
18 D.2 Derivation of the equation used for the calculation of TC,out
19 D.3 Alternative solar collector simulator
22 Annex E (normative)Appliances covered by this document

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BS EN 13203-3:2022
$142.49