Brazed heat exchanger, XB

Transcription

1 Description / application The X is a brazed plate heat exchanger designed for use with district heating systems (i.e. air conditioning, heating, domestic hot water). X brazed plate heat exchangers are made with several differently sized heat exchange plates. pprovals: C certificate according (PD) 97/23/C GOST/ Russia SVGW/Switzerland V/Denmark Main data: Min. temperature 10 C Max. temperature +180 C Max. working pressure 25 bar Circulation water / glycolic water up to 50% Connection size DN (threaded or flanged) DHSMT/I VD.K.6.02 Danfoss 11/2007

2 Ordering xplanation, X type X 10L 1 10 Number of plates Pass of the heat exchanger 1 = 1pass 2 = 2pass Plate type Plate size = razed heat exchanger The heat exchanger can consist of plates type L or plates type H. The H type plate has larger herring bone angle than the L type plate. H type plate fits better for certain temperatures than L type. H type heat exchangers have better heating capacity, but they also have higher pressure loss. The plate set can also be a combination of these two types. If every other plate is Htype plate and every other plate is Ltype plate, the combination is called type M. Plate types H M L L H L L type H type H M type The same principal difference can be obtained with other plate patterns as well. 1pass brazed heat exchangers type X H L Type X 041 X 06L1 X 06H1 X 101 X 201 X 241 X 301 X 361 X 401 Connection No of plates, n Thread Thread Thread Thread Thread Thread Thread Thread Thread G ¾ G ¾ G ¾ G 1 G 1 G ¾ (G 1 )¹) G 1 G 1 G for number of plates n 50 2 VD.K.6.02 Danfoss 11/2007 DHSMT/I

3 Ordering, continued 1pass brazed heat exchangers type X Type X 51H1 X 51L1 * X 51H1 S * X 51H1 S * X 51L1 S * X 51L1 S X 601 2) * X 601 S X 70L1 2) X 70M1 2) X 70H1 2) Connection No of plates, n Thread Thread Thread lange Thread lange lange lange lange lange lange G2 G2 G2 DN50 G2 DN50 DN 65 DN 65 DN DN DN 65/100 65/100 65/ primary side / secondary side 2) delivered with mounting brackets ex factory * Special versions; S This version includes 3 supporting bolts in the front and in the back, M12x20 2pass brazed heat exchangers type X Type X 042 X 102 X 202 X 302 X 51H2 X 51L2 Connection No of plates, n Thread Thread Thread Thread Thread Thread G ¾ G 1 G 1 G 1 G 2 G 2 20/ / / / / / / / / / / afterheating / preheating S version: Supporting bolts in the front and in the back DHSMT/I VD.K.6.02 Danfoss 11/2007

4 Special versions Special versions for different mediums, connections / couplings, max. operating pressures, materials and capacities are available on request. Please contact the local sales representative for details. ccessories Tailpieces for brazed heat exchanger type X Description Suitable for Connection Code No. Solder tailpieces Weldon tailpieces Threaded tailpieces n number of plates One set contains 2 tailpieces with unionnuts and gaskets X 04, X 06 X 24 (n<50) X 10, X 20 X 24 (n 50) X 30, X 36, X40 X 51 G ¾ / 15 mm G ¾ / 18 mm G 1 / 15 mm G 1 / 18 mm G 1 / 22 mm G 2 / 28 mm G 2 / 35 mm G 2 / 42 mm X 04, X 06 X 24 (n<50) G ¾ / DN X 10, X 20 X 24 (n 50) X 30, X 36, X 40 X 51 X 04, X 06 X 24 (n<50) X 10, X 20 X 24 (n 50) X 30, X 36, X 40 G 1 / DN 15 G 1 / DN 20 G 1 / DN 25 G 2 / DN 32 G 2 / DN 40 G 2 / DN 50 G ¾ / G ¾ G ¾ / G 1 G 1 / G ¾ H Mounting brackets for brazed heat exchanger type X X 04...X 40 X 51 X 60 X 70 Suitable for Code No. X 04, 06, X 24 <50 plates X plates X X 10, 20, 30, X X X actory assembled. Only to be ordered separately for service purposes. VD.K.6.02 Danfoss 11/2007 DHSMT/I

5 ccessories continued Insulation for 1pass brazed heat exchangers type X Type X 061 X 101 X 201 X 301 X 401 X 511 X 601 X 701 No of plates Insulation for 2pass brazed heat exchangers type X Type X 102 X 202 X 302 X 512 No of plates 20/20 26/ /30 36/ /40 46/ / / / /66 70/ afterheating / preheating Insulation properties Type PU (Polyurethane) see page 8 for X 06X 51 Coated steel sheet and polyester insulation, see page 8 for X 60X 70 Heatconductivity, λ [W/mK] Max temperature, C Permanent, C Short term peak, C Wall thickness, mm DHSMT/I VD.K.6.02 Danfoss 11/2007 5

6 Technical data 1pass brazed heat exchangers type X Type X 041 X 06L1 X06H1 X 101 X 201 X 241 X 301 X 361 X 401 X 51L1 X 601 X 70L1 X51H1 X 70M1 X 70H1 Max. working pressure (bar) 25 (16) 25(16)¹) / 16³) Max. operating temp. ( C) 180 Min. operating temp. 2) ( C) 10 low medium Circulation water / glycolic water up to 50% Volume/channel (litres) / ) Heat surface, m²/plate Connection type Cylindrical external thread acc. to DIN ISO 228/1 lange, DN Connection size G ¾ G 1 G ¾ (G 1)5) Plate material Stainless steel, mat. no razing material Copper G 1 G ) 65 4) 6) 3) / bar versions are available on enquiry (all types except X 041, 241, 36. X 701 secondary side: max. working pressure 16 bar 2) t flow temperatures below 2 C glycolic water must be used 3) Primary side / secondary side 4) langes PN 25 acc. to N 1092, facing type ( ⁵) or number of plates n 50 6) langes PN 16 acc. to N 1092, facing type ( 2pass brazed heat exchangers type X Heat exchanger heat surface (n2) * heat surface/plate n= number of plates Heat exchanger water volume Primary side Secondary side (n/2 * volume/channel n/2* volume/channel n= number of plates Type X 042 X 102 X 202 X 302 X 51L2, X 51H2 Max. working pressure (bar) 25 (16) Max. operating temp. ( C) 180 Min. operating temp. 2) ( C) 10 low medium Circulation water / glycolic water up to 50% Volume/channel (litres) Heat surface, m²/plate Connection type Cylindrical external thread acc. to DIN ISO 228/1 Connection size G ¾ G 1 G 2 Plate material Stainless steel, mat. no razing material Copper 16 bar versions are available on enquiry (all types except X 042). 2) t flow temperatures below 2 C glycolic water must be used Design and function T11 Primary side in T12 Primary side out T112 Primary side second inlet (2pass) T21 Secondary side in T22 Secondary side out T212 Secondary side second inlet (2 pass) The heat exchangers are made of shapepressed and brazed heat exchange plates, between which the flow channels are created. The heavy turbulence and counterflow principle enable efficient heat transfer. The task of the heat exchanger is to transfer heat from the primary to secondary flow through a heat transfer plate thus preventing the flows from mixing with each other. The choice of heat exchanger is determined by the desired heat output, required temperatures and the permitted pressure losses. The 2pass heat exchanger should be chosen for domestic hot water. The 2pass heat exchanger will often cool the district heating water to below 25 C. This capacity can be achieved by using a larger temperature difference, a smaller water flow and a heat exchanger with an optimum heat transfer area. This will affect the choice of motorized control valve, for instance. 6 VD.K.6.02 Danfoss 11/2007 DHSMT/I

7 Sizing Dimensioning and selection of heat exchangers should be carried out with the support of the Danfoss dimensioning program for heat exchangers. Mounting It is recommended to mount heat exchangers on their base in vertical position. This will assure the best venting and the least fouling. It is recommended that all pipes connected to the heat exchanger are equipped with shutoff valves for maintenance purposes. The pipes to be connected must be mounted so that the strain caused by the thermal expansion, for instance, does not harm the heat exchanger. The pipes must be equipped with brackets to prevent any torsional stress concentration at the heat exchanger s pipe connections. It is recommended that the heat exchanger is equipped with insulation. Disposal The brazed heat exchanger is made of valuable stainless steel and copper which can be recycled. Insulation sets can be disposed of in incineration plants thus recovering the energy or disposed of in landfills. lways follow local waste disposal regulations! Dimensions C C C Type Connection xternal dimensions [mm] Weight empty C/C1 D [kg] X G ¾ ¹) x n n x X G ¾ ¹) x n n x X 06 L... G ¾ ¹) n x 1, n x 0.08 X 06 H... G ¾ ¹) n x 1, n x 0.08 X 10 G x n n x 0.12 X 20 G x n n x 0.14 X 24...⁴) G ¾ ¹) x n n x 0.15 X 24...⁵) G x n n x 0.15 X 30 G x n 50 2+n x 0.18 X G x n n x 0.18 X 40 G x n 50 3+n x 0.25 X 51L X 51H... G x n 50 6+n x 0.38 X S⁷) X 51 S⁸) DN 50 2) x n 90 6+n x 0.38 X 60 X 60...S DN 65 2) x n n x 0.64 X 70L... X 70M... X 70H... DN 65 2) / 100 6) 3) / x n n x 1.50 n = number of plates (for 2pass heat exchangers the sum of afterheating and preheating plates) Cylindrical external thread acc. to DIN ISO 228/1 2) langes PN 25 acc. to N 1092, facing type ( ³) Primary side / secondary side D ⁴) or number of plates n < 50 ⁵) or number of plates n 50 ⁶) langes PN 16 acc. to N 1092, facing type ( ⁷) or number of plates n < 60 ⁸) or number of plates n 60 D X51... S C D D X70 X60 C1 DHSMT/I VD.K.6.02 Danfoss 11/2007 7

8 Dimensions continued lange connection d₂ d₂ n L1 Type DN L1 k n d 2 PN X51... S k X X70 65/ / /16 Primary side/ secondary side Insulation program (polyurethane) for brazed heat exchangers type X X 06,10, 20, 30, 40, 51 Type DN L1 k n d2 PN X50 G X X70 prim X70 sec Type (mm) (mm) No of plates [mm] X 60,70 Type (mm) (mm) No of plates [mm] 20/20 26/ /30 36/ /40 46/ / / / /66 70/ afterheating / preheating 8 VD.K.6.02 Danfoss 11/2007 DHSMT/I