ERP Lot 28: Pumps for for private and public waste water. Hugh Falkner.

Transcription

1 ERP Lot 28: Pumps for for private and public waste water Hugh Falkner

2 Date (if applicable) What is a Pump?

3 What has been achieved to date? EC Energy Using Product Lot 11: MEPs for Clean Cold Water Pumps & Circulators Regulations apply to Clean water duty only - End suction water pumps (ESCCi, ESCC, ESOB) - Vertical multistage water pumps - Submersible multistage pumps - Circulators

4 EC Energy Using Product Lot 28: What is in scope? Submersible Dry Well Slurry Archimedes Screw Domestic Drainage Paper & Pump Progressing Cavity

5 Details of pumps being considered Style of Pump Duties Hours per annum Slurry Pumps 4kW 1752 Centrifugal for solids handling pump 30kW 2920 Submersible pump 24kW 2920 Submersible pump once a day operation 7kW 365 Dry well pump Domestic drainage pump Progressing cavity pump 24kW kW kW 2190 Archimedean screw pump 35kW 8760

6 Functional Definition Functional unit for a pump The performance of a pump for wastewater or fluids with high solid content could be defined by the energy consumption required to convey a particular volume of fluid in a specified time to a particular head (height). The final functional unit will be chosen after further investigation in Task 1. Secondary product performance parameters There are many other parameters that are relevant when selecting a pump for these duties. These include: Ease of installation. Ease of disassembly for repair. Worn parts should be replaceable with minimum time for disassembly and reassembly. Solids handling capacity. They must be able to take solids of a specified diameter (100mm is a common standard), or sludge / slurries of a given dryness. Non-clogging ability. Ability to pass rags without ragging. Energy consumption. For pumps with high duty, energy efficiency is important. Availability of spares. Because these pumps have a high spares requirement, availability of spares is important. Wear resistance. Pumps need to be able to maintain efficiency, not wear out quickly due to wear from the product being pumped.

7 Some key challenges & information required Typical load profiles Efficiency : reliability (and wear) trade-offs Statistics annual sales, lifetime, mean sizes, etc Typical prices Costs of maintenance and downtime Appropriate test standards Coping with applications where poor efficiency is acceptable

8 Date (if applicable) Presentation Title LOT28 - Key Questions There is no definition of dirty water. Regulations to be based on ISO9906. It is up to the manufacturer to warrant performance in an applications, can we promote the better ones? An efficient pump can be destroyed in minutes. It is then not efficient. Reliability more important than efficiency in many applications nobody wants a over-flowing sewage. Can we ban vortex pumps? Can we achieve system savings?

9 ERP Lot 28: Clean Water Pumps Not LOT11 Atkins Hugh Falkner Keeran Jugdoyal

10 EC Energy Using Products Lot 29: What is in scope? >150 kw clean water pumps >150 kw borehole pumps Swimming pool pumps Aquarium air pump Aquarium water pump Fountain pump Pond pump

11 Basecase Design First Estimates Excluding Large Water Pumps Style of Pump Duties Hours per annum End suction own bearing 400 kw 2500 Submersible multistage pump 400 kw 2000 Vertical multistage pump 400 kw 2000 Style of Pump Duties Hours per annum Swimming pool pump 1.2 kw 2500 Fountain pump 120 W 2000 Pond pump 50 W 8720 Aquarium power head 10 W 8720 Aquarium blower 10 W 8720

12 Swimming pool pumps Primary Function The primary performance parameter is to circulate a given quantity of water per hour through the filter in order to maintain adequate water quality. Secondary product performance parameters Noise. This is a major issue and selling feature for pumps sold into the domestic environment. Efficiency at operating/duty point. This is a major determinant in lifetime operating costs. General construction. This can determine the ease of maintenance, installation and repair.

13 Date (if applicable) Presentation Title Swimming Pool Pumps The Extended Product Approach Flow (%) Time (%) Lc Lb Lw Flow (%) Time (%) Lc Lb Lw 115 5

14 Date (if applicable) Presentation Title LOT29 Key Questions Large clean water pumps why you can t make them all the Best efficiency Special designs. How can you test if they are unique? What are the costs of testing a big pump? Should we bother with very small domestic type pumps?

15 What is the Extended Product Approach? Acknowledgements to Europump

16 16 Europumps ecopump initiative ecopump The pump industry s answer to the Ecodesign directive! Product (Pump) Extended Product (Pump, PDS, Controls) System

17 Energy efficiency requirements Summary of EuP/ErP legislation and ecodesign requirements concerning pumps and motors Adoption/ Expected adoption Energy efficiency requirements Clean water pumps EP (EEI<zz) Expected future requirements Wastewater pumps EP (EEI<yy) MEI>0,1 MEI>0,4 EP (EEI<xx) Water pumps EEI<0,27 EEI<0,23 Circulators Motors IE2 IE3 or IE2+VSD IE3 or IE2+VSD* *Increased scope

18 Pump EuP/ErP Extended Product Approach (EPA) Extended Product Fluid Outlet Terminal box, or VSD Mains Pump Fluid Inlet Pump Coupling Electric Motor EuP/ErP Pumps MEI EuP/ErP - Electric Motors IEX Extended Product Approach EEI 18

19 pressure pressure EuP/ErP Extended Product Approach (EPA) Product Approach Ext. Prod. Approach Load profile + Reference control curve Partload BEP Overload BEP flow rate flow rate

20 EPA system types Closed loop systems or open loop systems Constant flow systems or variable flow systems When combined they cover all applications in the scope. 20

21 21 Extended Products in variable flow systems Fixed speed pump Variable speed pump H H L 4 L 3 L 2 L 1 L 1 L 4 L 3 L 2 Q Q P1 P1 Q Q

22 22 Load profile for closed loop variable flow systems (i.e. HVAC systems) H Flow [%] Time [%] L L 4 L 3 L 2 L 1 L L L Q P1 Q

23 23 Load profile for open loop Variable flow systems (i.e. Booster systems) H Flow [%] Time [%] L L 2 L 1 L L L Q L P1 L L L L L Q

24 24 Load profile Constant flow systems (i.e. Boiler feed pumps, Wastewater systems ) H L 3 L 2 Q L 1 Flow [%] Time [%] L L L P1 Open loop constant flow system Q

25 25 A pumping system example

26 Date Presentation (if applicable) Title The EPA How will it work in practice? Hugh Falkner

27 Some questions The same assembly of parts may have more than one EEI value, depending on application. An example is an air compressor that may be on base load or load following duty. How will this effect compliance checking? Yes, it would be in this example 2 EEI values, and both can / could/ should be tested. Will we need some calculation software? yes is part of the project and will be delivered Would this mean that parts which are individually compliant (and so can legally be put on to the market), could be used to create an assembly that is non-compliant? Yes, depening on the threshold for EEI it surely can happen.

28 Options for Compliance checking Option Check parts individually compliant (MEI), and that EEI is OK when using the selected Load profile Not necessarily, could be components okay but EEI not and vica versa depending Compliance check No additional measurements needed, just calculation of EEI using existing component (MEI) data. Or Test/Measurement possible For Integrated products, calculate EEI of assembly as a whole under assumed Load profile. EEI calculated or test Measurement of whole assembly required. Or calculation possible For Combined (separable) products, is it OK for manufacturers to request testing of the product as a complete assembly? Organised by manufacturer no third party required / Customer can calculate

29 Substitution of real life data with assumed data Can the actual load profile in an application be used in preference to an assumed standard one? We don t want products to be optimised for an assumed duty profile a long way from their actual duty profile. But this would add extra complication. The load profile and control curve represents the best known compromise intended for testing the appliance The real life demand for the pumps under discussion represented by a duty profile can always be chosen in practice (see Prof Hirschberg showing load profile for buildings all over Europe) Some standards use assumed settings / working conditions (eg assumed VSD switching frequency). If a manufacturer makes something using different settings, then these will have to be used when testing the (integrated) product. This creates an uneven playing field when comparing with suppliers using separate parts (and assumed settings). No. There will not be an uneven playing field, testing procedure will be specified in the standard to make these components comparable.

30 Who is the responsible party? In EUP Directive language Who is putting it on to the market? Product Type Responsible Party (?) Integrated (non separable) Combined (separable) Field assembled Manufacturer Product Integrator Installer

31 Further Questions What about the measurement of standby power for VSDs? stand-by regulation under consideration If we re testing custom or semi-custom products, what happens if it fails the test (current tests would ask for an extra 3 to be made). Same Problem as with Clean Water Pumps (see pren16480) Will a vendor need to supply documentation to show the EEI and how it was calculated? Depending on regulation could happen Replacement products. What will happen when a component is replaced or repaired will the EEI need re-calculating? Depending on regulation could happen open point in all ErP regulations

32 What we need from the standardisation process So far its been mainly about pumps please can we also have some engagement with other systems (fans, compressors, etc) Just because you can measure it, doesn t mean to say we have to regulate it. We still need to check the net benefit (consumer, environment) of any regulations. Most of all we need something simple and practical but we appreciate that the standardisation bodies need to do the fundamental work first. agreed Timescales?

33 LOT31 Compressors Hugh Falkner

34 Date (if applicable) Presentation Title Standard vs Process Compressors

35 Date (if applicable) Presentation Title Air compressor coverage chart

36 Date (if applicable) Presentation Title Air Compressor efficiency Apparent variation hides design differences. Why Isentropic efficiency?

37 Date (if applicable) Presentation Title What does the assumed basecase compressor look like? Where are centrifugal air compressors?

38 Date (if applicable) Presentation Title How much energy do compressors use?

39 Date (if applicable) Presentation Title Compressor types and applications

40 Date (if applicable) Presentation Title LOT30 - Key Questions How to ensure a fair comparison between different types. Accounting for part load performance the same compressor might be base or following load. Ascribing a benefit to Heat Recovery, improved air quality etc... Don t forget 2 stage machines, its not just about VSD control.