台湾绿色B建筑节水措施英文文献和中文翻译(4)
(4) Water-consumption of Wt=3 l per time within 20 s when using the common water-tap, is regarded as the base point consumption in determining the water-saving rate of the water-saving tap in Formula (1)。 The actual water-consumption of a water-tap should be determined according to the various water-consumption quantities noted in various brand specifications。 Herein,1。5 L per time (50% of the general water-consumption) is suggested for those passing the water-saving proof but without noting the water-consumption quantities。
(5) The determination of B, the water-saving quantity for water-saving bathing devices in Formula (1), should consider people’s various bathing habits; especially those concerning water-consumption during shower or bath。 The water-consumption of a shower is about 70l, and that of a bath exceeds 150 l。 Therefore, when calculating B,20 l should be added for a showering device without a bathtub; while the value for common bathtubs remains unchanged, and 20l should be subtracted for the massage bathtub (B=-20)。 Furthermore, for bathrooms equipped with timer devices, shower nozzles with low flow rates or some other kinds of water-saving equipment, 10 l can be added to B for each device。
(6) The systems, which use rain or intermediate water, require highly professional designs and the effects are hardly be considered as the same。 In order to respect each professional design, a standardized formula for calculating C is not suggested in this program。 A an applying project, the management of those buildings, which use such recycling systems, should report on the recycling rate of the rain or the intermediate water due to each device。 The rain or intermediate water can only be used for non-drinking water, an therefore, C should not exceed the rate of the water used for household chores (about 0。35) within building。
(7) Water-conservation equipment, such as water-saving toilets, automatically stopping taps, auto-sensor flushing devices, water-saving shower nozzles and bathtub should get the “water-saving proof” of the Water Resources Bureau ,Ministry of Economic Affairs(MOEA) of Taiwan; or, the proprietor should submit associated certificates。 The number of water-saving device should be counted according to the structural drawing of the building。 Only the six devices mentioned above which have been announced by the MOEA, can be counted。
3。3。 The principles of the accepted standard
Water-consumption design for a building must follow the principles below to reach the standard of the water-resource index。
(1) Use of water-saving equipment is most effective。 Particularly effective ways are the two-sectioned water-saving toilets and the water-saving showering devices without a bathtub。
(2) The incentive payments for reaching the standard can be easily gained by using water-saving toilets, water-taps and showering devices throughout the construction development。
(3) Despite its great water-saving efficiency, the system for recycling rain and intermediate water is not yet economically beneficial, due to the low water fee and the expense of water-disposal equipment。 However, systems for recycling the rain are considered more easily adoptable than systems for recycling intermediate water, and the method for assessing the recycling
Of rain is proposed in the next chapter。
3。4。 Case study example
References to all the associated devices, including shot drawings, instructional charts, certificates of water-saving quantity, and calculations of the index were all submitted for cases to be considered here。 If systems for recycling rain or intermediate water are adopted, then detailed drawings and water-saving rate reports should be submitted。 Such references are omitted in this case study。
Case 1: Brief explanation of the water-saving equipment。
(1) Construction base is located in Taipei city, and includes a total of five apartment blocks, each of five stories; each story has two residential units for a total of 50 units。 Each unit has two toilets。