Water Well Journal
Issue link: https://read.dmtmag.com/i/629532
CVCLD Gives You Edge in Geothermal Market Advances in ground source heat pump technology have emphasized the need for a voluntary certification designation for ground source heat pump drillers. That's why NGWA is proud to offer its designation, the Certified Vertical Closed Loop Driller—CVCLD. This designation reflects an individual who has proven knowledge, skills, and experience in the construction of a closed loop well system for ground source heat pump applications. By becoming a CVCLD, you increase your professional expertise and your company's marketability over your competition. Exams for the CVCLD designation can be scheduled by calling PSI LaserGrade at (800) 211-2754 (360-896-9111 out- side the United States). The 75 questions on the exam encom- pass the skills and competencies reflected on the Geothermal Vertical Closed Loop Drilling Operations DACUM. For more information about the CVCLD certification, visit the NGWA website at www.NGWA.org, scroll to the "Profes- sional Resources" tab and click on "Certification and exams." Checklist for Hiring Geothermal Heat Pump Contractors Offered by NGWA HVAC contractors, mechanical engineers, architects, developers, and others involved in geothermal heat pump installations should evaluate the qualifications of drilling contractors to protect groundwater and optimize heat pump system operation. NGWA has developed a list of pertinent questions that professionals should ask drilling contractors. The list can be accessed at NGWA's Wellowner.org website under the "Geothermal" tab. Estimates by the HVAC industry suggest as much as 50% of the total geothermal heat pump market involves the use of vertical borehole subsystems. There are several different configurations of geothermal heat pump system installations involving vertical Earth drilling: • Open loop: Single well for water withdrawal, water returned to a surface source • Open loop: Single well for water withdrawal, water returned to a second well • Standing column: Single well for water withdrawal and water return • Closed loop: Vertical boreholes • Direct exchange: Vertical boreholes using concentric pipe systems. Experienced geothermal heat pump installers confirm that it is critical these systems (1) be installed with a properly constructed borehole, (2) be equipped with a properly placed loop tube assembly, and (3) have properly grouted boreholes, not only for optimal heat transfer but also for groundwater protection. The LOG 18 February 2016 WWJ waterwelljournal.com An Insurance Program for the Groundwater Industry Coverage Available dustry. ment in ip dwater equ for the groun rillers, core sampling d eeds of water well and n e u iq n e u Coverage is customized to meet th Contact Us ected t usiness Well Pro our B Keep Y # ) # # ! ! " . + , / % . - / ( * . 0 ' $ # : act t n roker co t or b agen ave your h ard on WellGu . www.wellguard.com * & % % & & & & ! & ! &