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Feasibility Study Report on Passive Ultra - low Energy SIPs prefab Green Building Demonstration Project

Zhejiang Lvhouse Co.,Ltd | Updated: May 02, 2017

Feasibility Study Report on Passive Ultra - low Energy SIPs prefab Green Building Demonstration Project

Passive ultra-low energy consumption Building energy consumption indicators should be used special software or internationally recognized building energy consumption simulation software to calculate; for buildings, different types of building blocks should be calculated separately.

1, residential building in the annual heating (or cooling) demand calculation should meet the following requirements:

Indoor environmental parameters should be selected according to Table 1;

Table 1 Indoor environmental parameters

Indoor Environment Parameters Winter Summer

Temperature (℃) ≥20 ℃ ≤ 26 ℃

Relative humidity (%) ≥30% ① ≤ 60%

Fresh air volume (m3 / h · person) ≥ 30

Noise dB (A) daytime ≤ 40; night ≤ 30

Temperature does not guarantee the rate of ≤ 10% ≤ 10%

Should consider the impact of the thermal bridge on the cumulative load;

The use of monthly average method of calculation; when the outdoor temperature ≤ 28 ℃ and relative humidity ≤ 70%, the use of natural ventilation, does not calculate the cooling demand;

In addition to lighting outside the building get hot 2 W / m²;

Calculation of cooling needs, should also consider the impact of indoor lighting, lighting power density value of 3W / m²;

The use of the area should be calculated according to the national standard "residential design specification" GB50096;

2, the relative energy efficiency of public sips prefab buildings should be calculated in accordance with the following provisions:

(1) the relative energy efficiency should be calculated as follows:


Where: - relative energy efficiency;

E - design of building heating, cooling and lighting primary energy consumption kWh / (m2 a);

E0 - compared to building heating, cooling and lighting primary energy consumption kWh / (m2 a), compared to the building to meet the "public building energy efficiency design standards" GB50189-2015 of the building.

(2) the design of building design conditions should be determined according to the design documents, the indoor environmental standards should meet the existing national standard "civil building heating and ventilation and air conditioning design specifications" GB50736-2012 in the first class of thermal comfort;

(3) compared to the construction calculation conditions should be set to meet the national standard "public building energy efficiency design standards" GB50189-2015 Appendix B on the reference to the building requirements;

(4) sips design and construction of building heating and air conditioning system should be consistent, compared to the building energy efficiency equipment to meet the national standard "public building energy efficiency design standards" GB50189-2015 requirements;

(5) the calculation of lighting energy consumption, the design of architectural lighting schedule should be consistent with the building, but can take into account the energy conservation of automatic control measures;

(6) design of buildings and comparison of buildings should use the same software, the same meteorological parameters.

3, the annual heating, cooling and lighting primary energy consumption should be converted to standard coal after the sum of the calculation, the energy of the primary energy conversion factor should give priority to the use of local competent units to provide data, such as local no relevant data, The following provisions:

Fossil energy: 0.123 (kgce / kWh heat);

Heat: 0.15 (kgce / kWh heat);

Electricity: according to the year thermal power generation standard coal consumption or 0.36 (kgce / kWh electricity);

Biomass energy: 0.025 (kgce / kWh calorie);

Electricity (photovoltaic, wind and other renewable energy for personal use): 0;

4, energy consumption calculation book should include the following:

(1) the basic information of the building, including the building location, orientation, area, layer, layer height, body shape and window wall area ratio;

(2) envelope information, including the practice of the outer envelope and thermal performance, such as the external wall heat transfer coefficient, the heat transfer coefficient of the outer window and the sun heat coefficient, the number of thermal bridges and line heat transfer coefficient and other detailed parameters Wait;

(3) indoor parameter settings, including the new air volume standards, lighting power density, equipment power density, personnel density, building operating schedule, room heating set temperature, room cooling set temperature and other indoor calculation parameters;

(4) heating and air conditioning system information, including heating, air conditioning system form, configuration program, performance parameters, performance parameters, operation strategy; new wind and heat recovery system form, performance parameters and operating strategies, natural ventilation, cooling tower cooling and other Energy saving strategy information;

(5) lighting system information, including the lighting power density value, lighting schedule, lighting system, automatic control and other energy-saving lighting measures;

(6) the form of renewable energy systems, including renewable energy types, application area, equipment, energy efficiency, operational strategy;

(7) calculation results, including the annual heating demand for sips construction, annual cooling demand, lighting energy consumption, building annual heating, air conditioning and lighting primary energy consumption, energy efficiency;