Extracting Energy from Wastewater to Heat and Cool Buildings

Transcription

1 HUBER SE. 1 Extracting Energy from Wastewater to Heat and Cool Buildings Energy Savings for Building Owners and New Income for Water Utilities Frank Scriver Regional Sales Manager Huber Technology, Inc.

2 Winter - Conventional HVAC Solutions Ambient Air 32 o F 32 o F 15 o F Fossil Fuel COP ~ 0.9 Electricity COP ~3 Wa s t e w a t e r

3 Summer Conventional HVAC Solutions Ambient Air 85 o F 85 o F 105 o F Water Internal Heat Gains Wa s t e w a t e r COP ~3-4 Electricity

4 Different Buildings Use Energy Differently 4 Typical Office Building Summer Energy Profile Typical Leisure Centre Summer Energy Profile Typical Office Building Winter Energy Profile Typical Leisure Centre Winter Energy Profile

5 11 Story Office Building - London Sys load (kw) :00 06:00 12:00 18:00 00:00 Date: Wed 17/Jan Room cooling plant sens. load: (space heating and cooling profiles.aps) Room heating plant sens. load: (space heating and cooling profiles.aps) Chart data supplied by

6 Wastewater Temperatures Temperature Averages (excl KL) Invercargill - NZ Quebec East - Canada Quebec West - Canada Coos Bay, Oregon 2008 Falköping, Sweden Coos Bay, Oregon 2009 Coos Bay, Oregon 2010 Frankfurt, Germany Neuburg, Germany Malbork, Poland 2012 Malbork, Poland 2013 Sierpc, Poland Moorsville, NC, USA Kuala Lumpur, Malaysia Philidelphia, USA 40,0 35,0 30,0 25,0 20,0 75 F 15,0 10,0 50 F 5,0 0,0 Spring Summer Autumn Winter

7 Typical City of Today - Energy 7 Leisure Center & Community Housing Needs Heating Office Buildings Need Cooling Apartments Needs Heating Office Towers Need Cooling Apartment Buildings Needs Heating All Energy Is Lost to Atmosphere As Heat Factory needs Cooling Electricity, Gas, Oil

8 The Idea Capture Energy & Move Into Wastewater 8

9 Wastewater Has Neutral Temperatures Winter Ambient Air 32 o F Cp=1.02 & Good Energy Properties Summer Ambient Air 85 o F Cp=1.02 Target Indoor Temp 70 o F 50 o F-55 o F Cp = o F-60 o F Cp = 4.2 Wa s t e w a t e r

10 Wastewater Daily Flow Profiles Beverly Hills, Los Angeles Ukiah, Cal (site 3a) Ukiah, Cal (site 2) Ukiah, Cal (site 3b) Houston Oakland County Little Rock Buildings Occupied 0:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 Time

11 Winter Example Ambient Air 32 o F 32 o F 15 o F less energy 55 o F 60 o F Wa s t e w a t e r Electricity COP ~3 COP ~5

12 Summer Example Ambient Air 85 o F 85 o F 105 o F Water No water loss less energy 60 o F 65 o F Wa s t e w a t e r Electricity COP ~3 COP ~5

13 Shoulder Seasons (Spring/Autumn) Example Ambient Air 70 o F NB: Building must be designed to use this Low Grade Cooling Target Indoor Temp 70 o F Internal Heat Gains 60 o F Wa s t e w a t e r Chiller Bypassed and Energy Saved

14 Many Things Coinciding = Now Is The Right Time 14 Climate Change + G20 Agreement on HFC s. Rising Energy Prices = Climate Friendly Solutions Must Be Found More Energy Efficient Buildings GREEN BUILDING IS GROWING... New Technology Available Source: Green Market Size, Harvey Bernstein, McGraw-Hill Construction, Outlook Executive Conference 2012

15 Wastewater Energy Installations 15 Worldwide ~ systems installed China s Tianjin City, (pop 10 million) building code requires building designers to evaluate this system for all new developments. Some Projects Already Installed by HUBER Follow..

16 HUBER Installations 16 Canada: 1 (startup 3/2015) Germany: 6 Switzerland: 3 France: 1

17 Straubing Germany 17

18 Straubing Germany 18 WWTP

19 Straubing - Germany Apartments in Total, spread over 5 buildings ThermWin system in operation since October 2010

20 Straubing - Germany 20

21 Winterthur Switzerland 21

22 Winterthur Switzerland 22 Site WWTP

23 Winterthur - Switzerland 23 99m high with 28 levels. The system provides 480kW of heating & 840kW of cooling. Coefficient of Performance (COP) of approximately 5-6. In operation since February 2011

24 24 The Untapped Potential

25 Example: New York City $0.15/kWh (commercial users) $0.80/therm (commercial users) ~ $0.03/kWh Daily Water Handled Change Temp By: Energy Released % Commercial Buildings Energy Value 1,300 MGD 10 O F 10,500 GWh/year 15% $1.6 Billion $315 million

26 New York WWTP s 10 o F temp change provides 60,000kW energy 26 Jamaica WWTP

27 Schools in the Queens Borough ~160 schools in Queens are close(ish) to Jamaica WWTP within districts 24, 27, 28 & 29 60,000 kw is enough energy to heat and cool ~ of these schools That is an $120 Million dollar PER YEAR opportunity for DEP

28 Implementation 28

29 Massachusetts on the leading edge 29 Department of Energy Resources (DOER) PON ON-ENE has grant money available for implementing this exact technology 2 Grants still Available!) Barnstable has been awarded a grant to pilot the Huber ThermWin technology, with GHD as the engineering consultant. Replacing/ supplementing cooling towers on the City Hall cooling (Chillers) system Using water at a PS across the street Installation #1 in North America- Quebec City Will start up next month

30 The Good Points 1. In Developed Cities the Infrastructure is there. Modifications required are relatively modest. In Developing Cities, where infrastructure is not yet there, it should be easier than in Developed Cities & the cost penalty is likely to be relatively small. 2. The Water is there! Water will flow irrespective of seasons/wind/sun. 3. The Value is Easy to Establish. Energy prices are well known. 4. Customer Acceptance is Good. Everyone expects to pay for energy!

31 The Limitations The Wastewater flow is one way. The Energy available is variable. It is limited by available flows and acceptable temperature limits. The heating energy available is relatively low grade (~60 o F max).

32 Potential Opportunities- Municipal Heating and Cooling applications at WWTP Admin buildings/ comfort HVAC Biosolids drying Green Technology showcase Problem Customers Customers with hot waste water and/or must quench their waste water to meet temp limits Potential Revenue Stream Energy for heating and cooling, especially in a district system. Being explored by Washington DC, Boise, ID, others.

33 Wastewater Heat Exchanger 33 HUBER RoWin Heat Exchanger Automated cleaning outlet inlet Valve for periodic sediment discharge pipe modules (heat transfer surface) sediment removal screw

34 Many Thanks & Questions? 34 HUBER SE. Chris Hubbard Regional Sales Manager Huber Technology, Inc.