<% '============= Create and Open Database Connection ============= 'OPEN THE DATABASE If blnConnectToDB Then dim blnDBconnectionDown blnDBconnectionDown = false Err.Clear on error resume next set dbConn = Server.CreateObject("ADODB.Connection") 'Open the Connnection 'dbConn.Open Application("dbConn_ConnectionString") dbConn.Open "DSN=PostgreSQL30", "eere_news", "33reNews" ''New Error trapping. KC added 2/23/2012 If Err.Number <> 0 Then ''Response.Write (Err.Description& "

") dbConn.Close Set dbConn = nothing blnDBconnectionDown = true End If On Error GoTo 0 ''error trapping not working here KC removed 2/23/2012 ''tmpDBErrorNativeError = 0 '' For Each dbErr In dbConn.Errors '' strErrMsg = strErrMsg & _ '' "Source: " & dbErr.Source & vbCrLF & _ '' "Description: " & dbErr.Description & vbCrLF & _ '' "SQL State: " & dbErr.SQLState & vbCrLF & _ '' "NativeError: " & dbErr.NativeError & vbCrLF & _ '' "Number: " & dbErr.Number & vbCrLF & vbCrLF '' tmpDBErrorNativeError = dbErr.NativeError '' Next '' If (dbConn.Errors.Count > 0) AND (tmpDBErrorNativeError <> 5703) Then '' dbConn.Close '' Set dbConn = nothing '' blnDBconnectionDown = true '' Response.write(strErrMsg) '' Response.end '' End If dim arrErrors() Redim arrErrors(2,0) End If '============================================================== Public Function GetRS2(myCommand) On Error GoTo 0 'objConn: local connection object 'objRS: local recordset object 'objComm: command object passed in to the function Dim objConn, objRS, blnErrorLogged, objComm 'Create the command object Set objComm = Server.CreateObject("ADODB.Command") Set objComm = myCommand 'Create the connection object Set objConn = Server.CreateObject("ADODB.Connection") 'Open the connection object objConn.Open "DSN=PostgreSQL30", "eere_news", "33reNews" 'Set the active connection objComm.ActiveConnection = objConn 'Create the recordset object Set objRS = Server.CreateObject("ADODB.Recordset") 'Set the cursor location for disconnected recordsets 'objRS.CursorLocation = adUseClient 'Turn on error handling for just a second ' On Error Resume Next 'Open the recordset 'objRS.Open SQL, objConn, adOpenStatic, adLockOptimistic Set objRS = objComm.Execute 'Response.Write "State = " & objRS.State & "
" 'objRS.MoveLast 'objRS.MoveFirst 'Response.Write "Count = " & objRS.RecordCount & "
" 'Response.End 'Check for an error ' If Err.Number <> 0 Then ' Response.Write "Database Error Occured

" ' Response.Write "Error #" & Err.Number & "
" ' Response.Write Err.Description & "

" ' Response.Write "SQL:
" ' Response.Write SQL ' Response.End ' End If 'Turn off error handling ' On Error GoTo 0 'Disconnect the recordset 'Set objComm.ActiveConnection = Nothing 'Close the connection 'objConn.Close 'Set the connection to Nothing 'Set objConn = Nothing 'Set the Command to Nothing 'Set objComm = Nothing 'Return the recordset Set GetRS2 = objRS On Error Resume Next End Function '=============================================================== Function GetRS(sSQL) 'Declarations dim rs 'Create Recordset Object set rs = Server.CreateObject("ADODB.Recordset") If blnConnectToDB Then 'Open Recordset based on SQL rs.Open sSQL, dbConn, 1, 3, 1 End If 'Return Recordset set GetRs = rs End Function '=============================================================== Function ExecSQL(sSQL) 'Open the Command Object dim lRecordsAffected dbConn.Execute sSQL, lRecordsAffected 'Return the Records Affected ExecSQL = lRecordsAffected End Function '======================================================================== Function sendEmail(strFrom,strTo,strSubject,strMessage) Dim sch ' Schema sch = "http://schemas.microsoft.com/cdo/configuration/" Set cdoConfig = CreateObject("CDO.Configuration") With cdoConfig.Fields .Item(sch & "sendusing") = 2 .Item(sch & "smtpserver") = "mxrelay.doe.gov" .update End With Set cdoMessage = CreateObject("CDO.Message") With cdoMessage Set .Configuration = cdoConfig .From = strFrom .To = strTo .Subject = strSubject .TextBody = strMessage .Send End With Set cdoMessage = Nothing Set cdoConfig = Nothing End Function Function removeBadChars(tmpString) tmpString = Replace(tmpString , "<", "") tmpString = Replace(tmpString , ">", "") tmpString = Replace(tmpString , "'", "") tmpString = Replace(tmpString , """", "") tmpString = Replace(tmpString , ";", "") tmpString = Replace(tmpString , "(", "") tmpString = Replace(tmpString , ")", "") removeBadChars = tmpString End Function %> <% 'If there is a mobile version of this site, check the user_agent, and forward to 'the mobile version of the site (unless cookie or querystring var is set) if "true" = "true" then tmpSeeFullPage = Mid(Request.Querystring("m"),1,1) if ((isMobile) and (tmpSeeFullPage <> "1")) then tmpMobileURL = Request.servervariables("HTTP_URL") tmpMobileFileName = mid(tmpMobileURL, InStrRev(tmpMobileURL, "/")+1) tmpMobileURL = Left(tmpMobileURL, InStrRev(tmpMobileURL, "/")) tmpMobileURL = tmpMobileURL & "m/" & tmpMobileFileName Response.Clear Response.Redirect(tmpMobileURL) end if end if %>

<% ''This code is strictly when a user clicks on a left nav and needs to be forwarded to another site/program/office if ("" <> "") then Response.Clear Response.Redirect ("") end if %>

Covered Product Category: Air-Cooled Electric Chillers

Updated December 2012

FEMP provides acquisition guidance and Federal efficiency requirements across a variety of product categories, including air-cooled electric chillers, which are a FEMP-designated product category. Federal laws and executive orders mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law.

This product category overview covers the following:

Meeting Energy Efficiency Requirements for Air-Cooled Electric Chillers

The following tables describe the efficiency requirements that air-cooled chillers must meet. Note that chiller installations are typically optimized for full-load or part-load operation. Select the requirement (full-load or part-load optimization) that applies to your application, and make sure that the chiller you purchase meets both full-load and integrated part-load value (IPLV) requirements for that application as shown below.

Table 1. Efficiency Requirements for Federal Purchases: Air-Cooled Electric Chillersa
Full-Load Optimized Applications
products must meet both levels
Part-Load Optimized Applications
products must meet both levels
Chiller Capacity Full Load Efficiency IPLV Full Load Efficiency IPLV
< 150 tons ≤ 1.15 kW/ton
(≥ 10.40 EER)
≤ 0.96 kW/ton
(≥ 12.50 EER)
≤ 1.25 kW/ton
(≥ 9.56 EER)
≤ 0.78 kW/ton (≥ 15.39 EER)
≥ 150 tons ≤ 0.94 kW/ton
(≥ 12.75 EER)
≤ 0.80 kW/ton
(≥ 15.07 EER)
You may choose to use either the cooling capacity (kW/ton) or the Energy Efficiency Ratio (EER; Btu/watt) to determine a product's compliance.b

a Values are based on standard rating conditions as specified in Air-Conditioning, Heating, and Refrigeration Institute (AHRI) Standard 550/590. Only packaged chillers (i.e., none with remote condensers) are covered.
b Performance requirements are provided in both kilowatt (kW)/ton and energy efficiency ratio (EER or Btu/watt) units for convenience. When comparing air-cooled and water-cooled chillers, kW/ton is a common metric. When comparing only air-cooled chillers, EER (Btu/watt) is a common metric.

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Defining the Covered Product

This FEMP-designated product category applies to air-cooled electric chillers installed in Federal buildings. This includes leased spaces occupied by Federal tenants and for which the Federal government will pay the utility costs. Product performance must be measured in accordance with AHRI 550/590: Standard for Performance Rating Of Water-Chilling and Heat Pump Water-Heating Packages Using the Vapor Compression Cycle.

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Reducing Energy Costs: Save More Than $59,000 When You Buy Products that Exceed the FEMP-Designated Efficiency Requirement

FEMP has calculated that a product meeting FEMP-designated efficiency requirements saves money if priced no more than $59,860 above the less efficient alternative. The most efficient level saves the average user more money: $159,200. The complete cost effectiveness example and associated assumptions are provided in Table 3.

Table 3. Lifetime Savings for an Efficient 200-ton Air-Cooled Chiller In Full-Load Application
Base Modela FEMP-Designated Levelb Best Availablec
Full-Load Efficiency (EER) 9.56 10.40 12.17
Annual Energy Use (kWh) 501,987 461,538 394,412
Annual Energy Cost ($) $45,179 $41,538 $35,497
Lifetime Energy Cost ($) $742,903 $683,042 $583,701
Lifetime Energy Cost Savings ($) $59,861 $159,202

Notes: Examples assume 2,000 full-load operating hours per year, Federal electricity price of $0.09/kWh, 23 years of operation, and 3% discount rate. Future electricity price trends and a 3% discount rate are based on Federal guidelines (NISTIR 85-3273-26) and are from the Annual Supplement to NIST Handbook 135 and NBS Special Publication 709, "Energy Price Indices and Discount Factors for Life-Cycle Cost Analysis - 2011".
a The efficiency of the base model is just sufficient to meet ASHRAE Standard 90.1-2010.
b Federal purchases must be of products that meet or exceed FEMP-designated efficiency levels.
c The efficiency of the best available model was obtained during FEMP's market analysis and more efficient products may have been introduced to the market since this information was published.


Products meeting FEMP-designated efficiency requirements or ENERGY STAR® performance specifications may not be life cycle cost effective in certain low-use applications. For standard applications, purchasers will find that energy-efficient products have the lowest life cycle cost.

Operating conditions vary from facility to facility. To help determine cost effectiveness in operating conditions different from the example, see the FEMP Web-based chiller calculator tool. Additional guidance is available from the American Society of Heating, Refrigeration, and Air-conditioning Engineers (ASHRAE).

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Complying with Contracting Requirements

Legislation and the Federal Acquisition Regulations (FAR) require Federal agencies to specify and buy ENERGY STAR–qualified products or, in categories not included in the ENERGY STAR program, products that meet or exceed FEMP-designated efficiency requirements. Agencies that follow requirements to buy efficient products can realize substantial operating cost savings and help prevent pollution. As the world's largest consumer, the Federal government can help pull the entire U.S. market toward greater energy efficiency, while saving taxpayer dollars.

These requirements apply to all forms of procurement, including construction guide specifications and project specifications; renovation, repair, maintenance, and energy service contracts; lease agreements; acquisitions made using purchase cards; and solicitations for offers. Energy efficiency requirements should be included in both the evaluation criteria of solicitations and the evaluations of solicitation responses.

Federal Acquisition Regulation (FAR) Part 23.206 requires Federal agencies to insert the clause at FAR section 52.223-15 in solicitations and contracts that deliver, acquire, furnish, or specify energy-consuming products. FEMP recommends that agencies incorporate efficiency requirements into both the technical specification and evaluation sections of solicitations. Agencies may claim an exception to these requirements through a written finding that no ENERGY STAR-qualified or FEMP-designated product is available to meet the functional requirements, or that no such product is life cycle cost effective for the specific application. Additional information on Federal requirements is available.

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Buyer Tips: Choosing Efficient Products

When deciding on a chilled water system, designers must choose between air- and water-cooled chillers. Air-cooled systems eliminate the need for a cooling tower, reducing installation and maintenance costs. However, air-cooled chillers are substantially less efficient than water-cooled models (see FEMP's Covered Product Category: Water-Cooled Electric Chillers). To compare air- and water-cooled options, a detailed life cycle cost analysis can be performed using Building Life-Cycle Cost (BLCC) software available through FEMP.

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Finding More Information

The following resources provide additional information surrounding the purchase of efficient products:

Lawrence Berkeley National Laboratory provided supporting analysis for this product overview.

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