4. Pressure Boosting. Overview. System description. How to select FLOW THINKING

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1 FLOW THINKING 4. Pressure Boosting Overview Alication/roducts Product Range Featrues/Benefits Hydro 1000 Hydro 2000 Hydro Multi-E Hydro Solo-E System descrition Function Dimensioning Tank Dimensioning Installation How to select Pressure Boosting System

2 FLOW THINKING Overview APPLICATION/PRODUCTS Direct Boosting To building Pressure boosting from roof tank Zone 3 Booster system Zone 2 Break tank system To building Booster transort to roof tank Zone 1 Product Tye System Tye Hydro 1000 Hydro 2000 Hydro Multi-E Hydro Solo-E CR Pressure Boosting system with break tank Pressure Boosting system with direct connection to water Pressure Boosting system with roof tank transort to roof tank Zone divided water suly O X X O O X X O X X O O X X O X First choice = X Second choice = O 100

3 Overview APPLICATION/PRODUCTS PC User level (BMS suly) Sub-station level (BMS suly) Comonent level (Grundfos) G100 G10 G100 Hydro Solo-E Hydro 2000 Hydro 1000 Product Tye Communication Hydro 1000 Hydro 2000 Hydro Multi-E Hydro Solo-E CR External alarm - via relay External Start/Sto - via contact X X X X X X X X Remote set oint - analogue signal LON - via G10 X X X LON - via G100 GENIbus - direct First choice = X Second choice = O X X X X X X 101

4 FLOW THINKING Overview PRODUCT RANGE Pressure Booster Product Range Survey curve 50 Hz rogram H[m] 300 CR Hydro Solo-E 100 Hydro 2000 Hydro Multi-E Hydro Q[m 3 /h] 102

5 Overview FEATURES / BENEFITS Features Benefits SELECTION Wide roduct range Wide erformance range SELECTION Only one sulier, covers all systems Same booster tye for all systems INSTALLATION One comlete comact unit Boosters are tested and re-adjusted from factory All internal connections between ums, sensor etc. are done Build-in motor rotection INSTALLATION Easy installation, only suly and ies have to be connected Easy and safe commissioning Safe installation Low installation cost OPERATION Variable seed High quality material High efficiency OPERATION High comfort, energy saving Long lifetime Low Cost of Ownershi 103

6 FLOW THINKING Overview HYDRO 1000 TECHNICAL DATA Temerature 0 to +50 C Max. ressure PN 10 (10 bar) Boost Pressure m Flow range m 3 /h Power range 0.55 to 18.5 kw Number of ums 2 to 4 CR ums Materials : - Pum Cast iron, Stainless Steel - Manifolds Galvanized iron - Base late, etc. Stainless Steel COMMUNICATION None MAIN PRODUCT FEATURES Easy installation No need for motor rotection Wide roduct range Wide alication range MAIN CUSTOMER BENEFITS H[m] Hydro 1000 Installer: Easy installation Only one sulier End user: More ums, suly security Long lifetime Q[m³/h] 104

7 Overview HYDRO 2000 TECHNICAL DATA Temerature 0 to +70 C Max. ressure PN 16 (16 bar) Boost Pressure m Flow range m 3 /h Power range 0.55 to 30 kw Number of ums 2 to 6 CR(E) ums Materials : - Pum Cast iron, Stainless Steel - Manifolds Stainless Steel - Base late, etc. Stainless Steel COMMUNICATION Alarm and oerating relay Start / Sto inut Anlog inut for set oint GENIbus MAIN PRODUCT FEATURES Hydro 2000 Easy installation Constant ressure Seed controlled ums No need for motor rotection Wide roduct range Wide alication range H[m] MAIN CUSTOMER BENEFITS 40 Installer: Easy installation and commissioning Only one sulier End user: More ums, suly security Constant suly ressure Long lifetime Q[m³/h] 105

8 FLOW THINKING Overview HYDRO MULTI-E TECHNICAL DATA Temerature 0 to +70 C Max. ressure PN 16 (16 bar) Boost Pressure m Flow range 2 45 m 3 /h Power range 0.55 to 5.5 kw Number of ums 2 to 3 CRE ums Materials : - Pum Cast iron, Stainless Steel - Manifolds Stainless Steel - Base late, etc. Stainless Steel COMMUNICATION Alarm and oerating relay Start / Sto inut GENIbus LON MAIN PRODUCT FEATURES Easy installation Constant ressure Seed controlled ums No need for motor rotection Wide roduct range Wide alication range MAIN CUSTOMER BENEFITS H[m] Hydro Multi-E Installer: Easy installation and commissioning Only one sulier End user: Easy to oerate Very reliable More ums, suly security Constant suly ressure Long lifetime Q[m³/h] 106

9 Overview HYDRO SOLO-E TECHNICAL DATA Temerature 0 to +70 C Max. ressure PN 16 (16 bar) Boost Pressure m Flow range 2 20 m 3 /h Power range 0.55 to 5.5 kw Number of ums One CRE um Materials : - Pum Cast iron, Stainless Steel - Discharge ie Stainless Steel - Base late, etc. Stainless Steel COMMUNICATION Signalling relay Start / Sto inut Anlog inut for set oint GENIbus R100, IR remote controller Hydro Solo-E MAIN PRODUCT FEATURES Easy installation Constant ressure Seed controlled um No need for motor rotection Comact solution Wide alication range H[m] MAIN CUSTOMER BENEFITS Installer: Easy installation and commissioning Only one sulier End user: Constant suly ressure Long lifetime Q[m³/h] 107

10 FLOW THINKING Alication descrition DIMENSIONING FUNCTION The water suly to a building have to be reliable and comfortable. To fulfil this requirement a ressure boosting system is very recommendable. A comlete ressure boosting system will automatically comensate for the variations in the re ressure from the water and the variations in consumtion and by varying erformance ensure that the suly ressure to the building is constant. We recommend the seed controlled Hydro 2000 ME ressure boosting systems, which can give a constant ressure to the building and at the same time ensures otimum oeration costs and suly security. If system cost is very imortant, the lower cost systems Hydro 1000 can be selected. If standby um caacity is not required, the Hydro Solo-E solution can be recommended. Hydro 2000 To the building Hydro Multi-E To the building DIMENSIONING Max. flow demand m 3 /h System tye Hydro 2000 Solo E Hydro Hydro Multi-E 2 10 Standby um Hydro Solo-E not required No standby um! To the building Hydro Variations in Hydro 1000 ressure can + ressure tank be acceted To the building Pressure variations! Tank required! 108

11 Alication descrition DIMENSIONING DIMENSIONING Use the Consumtion Profile as the basis for selecting the otimum system. The number of ums and the size of these shall fit to rofile. Use the Grundfos um selection tool WinCAPS for selection of the right system. TANK DIMENSIONING Hydro 1000 and Hydro 2000 MS systems are oerating as on/off systems without any seed control. Therefore these systems always requires a ressure tank on the discharge side of the booster. For other systems like Hydro 2000 ME, Hydro 2000 MF and Hydro Multi-E a ressure tank is recommended if the flow can go down to, or close to zero. In these cases a small diahragm tank will give the system a much better erformance. The dimensioning of the tank can be seen from the table. The tank volume is in litre and is deending of the size of the ums going into the booster. If the booster as an examle is a Hydro 2000 ME 3xCRE8-60, the nominal flow of one of the ums are 8 m 3 /h resulting in a 24 litre tank. Hydro Solo-E and Hydro Multi-E are delivered with a tank as standard. INSTALLATION Grundfos ressure boosting systems are easy to install. Connect the unit to suly and the iing, rime the system and we are ready to go. It is recommendable to install a water shortage detection on the suction side the booster. By direct boosting systems a ressure switch can be used in case of a break tank system, a level switch in the tank will be the best solution. Flow m 3 /h Time Flow Q Consumtion rofile Tank volume (litre) m 3 /h Hydro 1000 ME, MF Hydro 2000 MS or Multi-E

12 FLOW THINKING How to select PRESSURE BOOSTING SYSTEM Quick guide for selecting ressure boosting system Ste 1: Define the maximum flow requirement ex. 27 m 3 /h Ste 2: Define the consumtion rofile Ste 3: Define the system layout ex. direct boosting from, system slit in zones Ste 4: Define the required ressure ex bar Ste 5: Find the exact ressure boosting system ex. Hydro xCRE8-100 Ste 6: Consider accessories ex. Diahragm tank STEP 1: DEFINE THE MAXIMUM FLOW REQUIREMENT The required total consumtion and maximum flow requirement deends on the alication in question. There is a big difference in the requirement from e.g. a ressure boosting system in a block of flats comared to a system in a hotel. The table below shows an examle of dimensioning values, according to Danish Standards. Consu- Unit Q year Consum. Q day f d Q(m) day f t Max. mer m 3 eriod m 3 /day m 3 /day Flow er d m 3 /h year days/year Residence Residence buildings (2.5 ers.) Office Emloyee building Shoing Emloyee centre Suer Emloyee market Hotel Bed , Hosital Bed School Puil According DS439, DS

13 How to select PRESSURE BOOSTING SYSTEM STEP 1: DEFINE THE MAXIMUM FLOW REQUIREMENT, CONTINUED Examle: Hotel with 540 beds. Number of beds: n Total annual consumtion: Q year x n Consumtion eriod: d Average consumtion er day: (Q year x n)/d Year maximum consumtion: Q(m) day = fd x Q day Maximum flow requirement: Q(max) = ft x Q(m) day /24 Or use the quick sizing chart below. Calculation: n = 540 beds Q year x n = 180 x 540 = m 3 /year d = 365 days/year => (Q year x n)/d = / 365 = m 3 /day fd x Q day = 1.5 x = m 3 /day Q(max) = ft x Q(m) day /24 = 1.5 x 399.4/24 = 66.6 m 3 /h Q [m³/h] Hotel School 20 Office Flats Residential home

14 FLOW THINKING How to select PRESSURE BOOSTING SYSTEM STEP 2: DEFINE THE CONSUMPTION PROFILE The consumtion rofile is the information about the change in flow during one day or season. In a hotel the water demand will fluctuate a lot during the day. In the morning, where most of the guest are taking a shower and all the service facilities, such as cleaning, cocking and washing starts u, we will have the highest demand for water suly during the day. Also about dinner time we will see a eak in the demand. A tyical consumtion file for the hotel examle above, looks like this: Flow m 3 /h Consumtion rofile Time The consumtion rofile is imorted information in the selection rocess as the rofile has a high influence of the choice of booster system tye and the number of ums which the system consists of. See ste 5. Based on the consumtion rofile a Load Profile can be made. From this we can see how many hours er day a certain flow is required. Flow m 3 /h Load Profile Hours er day 112

15 How to select PRESSURE BOOSTING SYSTEM STEP 3: DEFINE THE SYSTEM LAYOUT The system layout have to be considered before the booster system can be selected. Direct Boosting Direct boosting or break tank The connection to the water suly can either be directly or via a break tank. If direct connection is allowed this will be recommendable. The ressure requirement to a ressure boosting system with direct connection will be be less than systems with break tank, as the system then can use the water suly ressure as a re-ressure. Deending of area the water suly ressure tyically will be in the range bar. Booster system Break tank system To building Break tanks are often required in areas where: the iing in the are weak and can t stand ressure surges caused by ums starting and stoing. local requirements where sucking from the water isn t allowed Booster To building Roof tank systems In some areas roof tank systems are required. The reason is to ensure water suly for a certain eriod also if the elctrical ower suly disaears. Roof tank The transfer um can um from a break tank or direct from suly. suly (ressure) to the building is obtained by a Booster System, boosting down to the 3-4 uer floors. The rest of the building is sulied by gravity. Transfer um 113

16 FLOW THINKING How to select PRESSURE BOOSTING SYSTEM STEP 3: DEFINE THE SYSTEM LAYOUT, CONTINUED Zones In high rise buildings is it necessary to slit the water suly system u in zones to ensure: that the ressure from one floor to an other doesn t vary too much. Min. ressure uer floor in each zone should not be lower than bar Max. ressure in lowest floor in each zone should not be higher than bar System layout can be with : 1. All booster systems in basement. Boosting u in the building (see figure). 2. Cascade booster system layout. One booster in the basement sulies all the water u to zone 1, where a second booster will boost u to zone 2, etc. 3. In combination with roof tank. A booster on the roof to are boosting down to the 3-4 uer floors. The rest of the building is sulied by gravity. Zone 3 Zone 2 Zone 1 Zone 2 Zone 3 Zone 1 114

17 How to select PRESSURE BOOSTING SYSTEM STEP 4: DEFINE THE REQUIRED PRESSURE The required ressure set from the ressure boosting system can be calculated from the following formulas : ta (min) set = ta(min) + f + h max /10.2 ; boost = set in(min) set ta(min) f h max in(min) boost : the required outlet ressure from the booster : the required min ressure at the highest taing oint in the zone : the total ie friction loos in the iing from booster to zone : the height from the booster outlet to the highest taing oint : the minimum inlet ressure to the booster : the required boost from the ressure boosting system in (min) boost set f h max Examle : ta(min) f h max in(min) set boost = 2 bar = 1.2 bar = 41.5 m = 2 bar = /10.2 = 7.3 bar = = 5.3 bar If the water suly system consists of more zones the calculation have to be done for each zone. 115

18 FLOW THINKING How to select PRESSURE BOOSTING SYSTEM STEP 5: FIND THE EXACT PRESSURE BOOSTING SYSTEM Why choose a ressure boosting system? There are three main reasons why a customer should choose a booster system instead of just a single um in his installation: 1. One um is not sufficient to cover the flow demand. 2. Reserve um caacity is required. 3. Better adatability to variations in consumtion. Which tye of booster system is referable? Grundfos offers five different main variants within the Hydro 2000 roduct family. The different systems and there main features can be seen from the below table. For most alications we will recommend the seed controlled solution based on the Grundfos CREums. ME system All ums are CRE-ums Constant ressure. Seed control available also if one um fails. MEH Z system Two ums are CRE-ums. Remaining ums are fixed seed CR-ums. Constant ressure. If one CRE-um fails the ressure control is limited. MES system One CRE-um. Remaining ums are fixed seed CR-ums. Constant ressure. If the CRE-um fails, the ressure control will be like a MS system. MF system All ums are CR-ums. One of these are seed controlled by a frequency converter. Constant ressure. If the frequency converter fails, the ressure control will be like a MS system MS system All ums fixed seed CR-ums. Pressure constant within a band. Requires a large diahragm tank. 116

19 How to select PRESSURE BOOSTING SYSTEM STEP 5: FIND THE EXACT PRESSURE BOOSTING SYSTEM, CONTINUED Using WinCAPS for selecting the right ressure boosting system. The um selection tool WinCAPS will be the erfect tool for finding the best solution to a booster alication. Give in the dimensioning values : Maximum flow required Required ressure Inlet ressure Load rofile and ask for dimensioning and WinCAPS will select a number of systems, sorted according to annual energy consumtion. Examle: Values described on the ervious ages are used as an dimensioning examle. 117