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  <xs:element id="tt_FairValueOfOptionsAssumptionsLineItems" abstract="true" name="FairValueOfOptionsAssumptionsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tt_OtherNetTable" abstract="true" name="OtherNetTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="tt_ChargeToIncreaseFundingLiability" abstract="false" name="ChargeToIncreaseFundingLiability" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tt_NonCashGainOnAcquisitionOfPreviouslyHeldInvestment" abstract="false" name="NonCashGainOnAcquisitionOfPreviouslyHeldInvestment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tt_StellarEnergyMember" abstract="true" name="StellarEnergyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tt_EarningsPerShareTable" abstract="true" name="EarningsPerShareTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="tt_BusinessSegmentInformationAbstract" abstract="true" name="BusinessSegmentInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="tt_SegmentReportingInformationBySegmentTable" abstract="true" name="SegmentReportingInformationBySegmentTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="tt_SegmentAdjustedEBITDA" abstract="false" name="SegmentAdjustedEBITDA" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tt_Unallocatedcorporateexpense" abstract="false" name="Unallocatedcorporateexpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tt_SegmentOperatingIncomeAsPercentageOfRevenues" abstract="false" name="SegmentOperatingIncomeAsPercentageOfRevenues" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="tt_SegmentAdjustedDepreciationAndAmortization" abstract="false" name="SegmentAdjustedDepreciationAndAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tt_AdjustedOtherIncomeexpenseNet" abstract="false" name="AdjustedOtherIncomeexpenseNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tt_SegmentAdjustedOI" abstract="false" name="SegmentAdjustedOI" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tt_BacklogAmortization" abstract="false" name="BacklogAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tt_CommitmentsAndContingenciesTable" abstract="true" name="CommitmentsAndContingenciesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="tt_LiabilityfromDeconsolidation" abstract="false" name="LiabilityfromDeconsolidation" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tt_QualifiedSettlementFund" abstract="false" name="QualifiedSettlementFund" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tt_QSFFunding" abstract="false" name="QSFFunding" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tt_SupplierFinancingInvoicesConfirmed" abstract="false" name="SupplierFinancingInvoicesConfirmed" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tt_SupplierFinancingInvoicesPaid" abstract="false" name="SupplierFinancingInvoicesPaid" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tt_ChristopherJ.KuehnMember" abstract="true" name="ChristopherJ.KuehnMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tt_DavidS.RegneryMember" abstract="true" name="DavidS.RegneryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tt_ElizabethElwellMember" abstract="true" name="ElizabethElwellMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="tt_MaireadMagnerMember" abstract="true" name="MaireadMagnerMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
