christian louboutin københavn With the level of th

With the level of the refrigerated display case air curtain cooling load calculation

J / kg into showcase by exposure can be assumed that the total heat transfer coefficient K (unit: W / (MK)] to describe: K = Q. / F 【tb ~ t.) (71 sample, put through the open l: 1 into the display of the total heat rejection is calculated into the formula for the common form of heat. the application of force for heat transfer calculation assumes that the premise is first to identify the heat transfer coefficient K, which can be tested to OK. heat shield through the heat reject incoming display the following formula to calculate the Q3 = KF (tb - t.) 【 Cool

where: K - heat shield heat transfer coefficient, w / (MK) F ~ - heat shield area, M club to achieve the display of the internal air circulation, fans set f takes refrigerated display area, the work of fan motor heat. dlf its closure smaller. F-type can be estimated: Qr_nNe (91 where: n - the number of showcase N one by one fan motor consumes electrical power chant, W equation (7) and ( Cool

with the arms (1) Results table, get : Qo = (KF-fKFJ 【lb-t.) + Q {(1O) so that type (1O) is the ridge level of air curtain refrigerated display the total cooling load resisting formula. This type of solution,[link widoczny dla zalogowanych], the key is K determination. Third, the load distribution to discuss the level of air curtain with pepper refrigerated display case refrigeration load distribution Ng, first you must know the cold wins B'kg / csMb07n quote 0.O.040.03 Ⅱ .020.0 li | 1 t01020-℃ cold air curtain ring area of 3 units in Hong Kong through the flow of ambient air temperature tJ stern relationship with the consumption of cold air curtain. by the type (2J know, the cold air curtain with the infiltration of air between the heat of the solution,[link widoczny dla zalogowanych], must understand environment within the unit when you hear the quality of the air curtain with the cold air exchange capacity G. actually air quality with the cold air curtain is a curtain of air to cold air infiltration process,[link widoczny dla zalogowanych], so G is the cold air curtain air infiltration traffic. For the unit area of cold air curtain, air infiltration flow rate with temperature (b - t) relationship as 3 3 / 23 * 1993 Refrigeration said. cold air flow at a low temperature range close to the edge of moving the body glistening characteristics. glistening in the cold air moving in fact does not exist in a mixed situation. It can be seen, there are two stable areas. In tb-t. = lO ~ l2 ℃, the amount of air infiltration throughout almost unchanged at t0> ; 25 ~ relaxation ℃, the air closer to the flow of glistening prisms, between them there is a rapid change of air infiltration capacity of the district town. Yi is due to a change in the flow of the election, caused by a rapidly changing region. Q., W/_MIQ.It--25CI1 ',-l}''54j% II,, Il, tO.5'',[link widoczny dla zalogowanych], 5, '13''''' r ■, Ifl,. _ destroyed. 5O 4 Kids in a long exposure to red flesh IM Yin 0.8M cabinet in the new situation the heat level of 25 ℃ ambient temperature conditions, for long exposure o.8M lM wide display cabinet, with the type (1o) calculated heat balance shown in Figure 4. the figure shows the total heat penetration the heat in Q1 about 5O% ~ 70%, radiant heat about l5% ~ 33%. The heat shield about the heat transmission cabinet l0% to 15%. Showcase cold air curtain cooling consumption in a large proportion of container in the design need to pay enough attention to its structure. In fact, air humidity on refrigerated display of 24 * La Chong 3 / 1993 cabinet cooling consumption greatly. When the air temperature from lO% ~ 35% increased to 50% ~ 7O%, the refrigerated display an average increase of axial cooling load required to 2O% ~ 30%. Table l for the United States TYLER Produced by the company with the cold curtain of cold storage showcase cylinder length of the required cooling capacity index m, and its environmental requirements temperature 25 ℃, humidity 55%. its value with the use type (1o) was consistent calculation of the company Huang Ying TYLER produced by cold storage with a cold curtain array cabinet cooling capacity needed indicators. W / M I wind screen wrapped in a refrigerated display case air temperature, the width of M,[link widoczny dla zalogowanych], ℃ IOO826433346-32529442 IV, Conclusion 1. This paper has proposed for level of cold plate refrigerated display screen of the cooling load calculation formula together with the statement required by similar foreign products are basically the same cooling load. 2. Zhou analysis results show that the cold wind screen in the cooling load in the refrigerated display case a large percentage of , its value can be reached 5O% ~ 7O%. 3. ambient air humidity on the cooling load display case under discussion have a great impact. ● test [1] Yang Chuan cooked World Science Higher Education Press drill the well-being .1984 ~ (2 ] TYLER. product samples. Tin

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