Expert Details
HVAC Design, DDC Control, Fluid Dynamics, Constructability
ID: 724252
Connecticut, USA
He possess EPA Universal Certification to purchase and use freon type refrigerants
He has the ability to design air duct systems using industry standards for velocity and noise level limits.
He can identify ductwork design or installation errors that can cause insufficient air flow or excessive noise levels.
He has extensive experience on the installation and service of all type of air conditioning equipment including chillers and chilled water coils, DX coils and condensers, hot water and pre-heat coils and associated air handlers.
He has knowledge of minimum air requirements, outside, mixed and exhaust damper sequencing.
He can design, install and service electronic, pneumatic and DDC control systems for air conditioning equipment.
He provides service as Commissioning Agent on large DDC systems. This includes executing pre-functional checklists and functional performance tests to verify that control system adheres to design intent.
He verifies that the sequence of operation defined by engineer is reflected in DDC program.
He is experienced in testing automatic transfer switching including shunt breaker operation in emergency-standby power generation systems.
He has been employed as a Project Engineer for Andover Controls designing Energy Management Systems to automate HVAC systems and reduce energy consumption.
He can perform calculations of projected energy savings and return on investment.
He has the ability to verify proper operation of flame sensors in large gas and oil fired equipment.
He specifies and calibrates air and water flow sensors to provide proper input to control systems in order to match flow requirements to system demand.
He has specified, installed and serviced all types of HVAC equipment up to 1200 tons cooling and 360,000 CFM supply fans.
He is retained to investigate problems associated with large air handling units, makeup air units and exhaust systems including Biohazard Level III laboratory hoods.
He has repaired valves and actuators on dampers, chilled water coils, preheat coils and heating coils.
He programs variable frequency drives of supply and exhaust fans to maintain proper pressure in conditioned spaces while providing minimum makeup air requirements.
He specifies and installs pressure sensors for air, water and refrigerant use.
Expert has extensive experience producing investment-grade energy audits of large facilities. He works with local utility companies to secure incentives and grants for the client.
He installs and tests refrigerant leak monitors for chiller rooms.
He is familiar with all type of heat, temperature, pressure, CO2, O2, CO, explosive gas, motion and proximity sensors.
He has specified, replaced and calibrated above sensors.
He has knowledge of all type of temperature sensors including thermistor and RTD devices.
He has a broad comprehension of electromechanical, electronic and pneumatic thermostats and control systems.
He is experienced in the installation and calibration of air and water velocity sensors used in order to calculate CFM and GPM of HVAC systems.
He has extensive experience in the design and installation of automation systems to control HVAC equipment for tenant comfort and energy savings.
He specifies power monitoring transducers to record and reduce KW usage and demand. He works with utility company representatives in order to implement incentives for energy saving strategies.
He has designed and serviced all types of climate control systems including pneumatic, electronic, electromechanical and DDC.
He has extensive experience in computer room applications where humidity control was critical.
He has clean room applications experience where filtering and room pressure control were critical.
He has performed design review of many diverse projects from small HVAC systems to pharmaceutical manufacturing facilities requiring FDA approval and intensive IQ, OQ and PQ validation.He has reviewed depositions and evidence in order to form an expert opinion as to the reason reheats coils froze in a high rise building causing extensive water damage.He has reviewed complaint in a class action suit claiming false advertising and a defective product. A portable air conditioner manufacturer was the defendant. He tested the system under normal and extreme operating conditions to ascertain accuracy of complaint.
Education
| Year | Degree | Subject | Institution |
|---|---|---|---|
| Year: 1985 | Degree: CT D1 License | Subject: A/C, Refrigeration Contractor | Institution: Technical Careers Institute |
| Year: 1982 | Degree: CT B1 License | Subject: Oil Burner Contractor | Institution: Technical Careers Institute |
| Year: 2009 | Degree: Certified Energy Manager | Subject: Energy Efficiency | Institution: Association of Energy Engineers |
| Year: 2010 | Degree: Certified Energy Auditor | Subject: Energy Efficiency and Consumption | Institution: Association of Energy Engineers |
Work History
| Years | Employer | Title | Department |
|---|---|---|---|
| Years: 1985 to 2018 | Employer: PDiglio, LLC | Title: Owner | Department: Administration |
Responsibilities:Owner of Mechanical Contracting firm. Many projects for SNET, telephone company in CT and at Sub-Base New London. Industrial HVAC service and installation. DDC control installation and programming. |
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| Years | Employer | Title | Department |
| Years: 2010 to 2018 | Employer: 4 Elements Group | Title: Senior Energy & Commissioning Engineer | Department: Energy Engineer |
Responsibilities:Perform ASHRAE Level III investment grade energy audits for commercial buildings.Develop and manage energy efficient projects.Provide energy simulations in eQuest. Provide fundamental and enhanced commissioning for LEED |
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| Years | Employer | Title | Department |
| Years: 2008 to 2010 | Employer: Environmental Systems Corp | Title: Energy Engineer | Department: Energy Solutions |
Responsibilities:He performs investment-grade ASHRAE Level III energy audits of large commercial and industrial facilities.He is competent in the use of eQuest to model energy usage and perform ASHRAE 90.1 compliance checks. |
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| Years | Employer | Title | Department |
| Years: 2007 to 2008 | Employer: Diversified Technology | Title: Construction Administrator | Department: Construction |
Responsibilities:Design review, constructibility review, field inspections to verify project is being installed according to contract specifications |
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| Years | Employer | Title | Department |
| Years: 2007 to 2007 | Employer: Dominion Consulting, LLC | Title: Project Engineer | Department: Project Engineering |
Responsibilities:Contracted employee at Pfizer PGRD in Groton, CT. Design review of several projects. |
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| Years | Employer | Title | Department |
| Years: 2006 to 2007 | Employer: Porter & Chester Institute | Title: Project Manager | Department: Commissioning |
Responsibilities:Project manager on large commissioning and retro-commissioning projects. Performed field inspections of equipment installation and performed functional performance testing of HVAC and Fire/Life Safety equipment. |
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Government Experience
| Years | Agency | Role | Description |
|---|---|---|---|
| Years: 1992 to 1997 | Agency: US Navy | Role: Contractor | Description: Performed many HVAC projects at the Sub Base in New London/Groton shipyard. |
Additional Experience
| Expert Witness Experience |
|---|
| Was employed part-time for several years to inspect insurance claims as an independent agent. Diagnosed possibility of HVAC equipment causing fire or smoke damage. Retained as expert witness in claim of water damage to a building caused by the freezing of reheat coils. The mechanical contractor did not exercise a reasonable standard of care because the building owner was not informed of necessary equipment repairs before the incident. Retained to test portable air conditioning system in class action suit. Retained to determine cause of water damage due to frozen reheat coils in a biomedical research facility. Retained to determine cause of PVC piping fracture in a heat pump system loop for a large middle school. Retained to evaluate a service technician's standard of care. The technician blew out a 60+ year old residential underground oil supply line with 850 PSI of CO2, causing an oil leak that cost over several hundred thousand dollars to remediate. |
| Training / Seminars |
|---|
| He has taught HVAC trade school for over one year. He presented DDC and automated building access control system seminars for Building Mechanics at SNET on many occasions from 1986 through 2001. Developed D1 and S1 prep test training curriculums at Porter and Chester Institute. |
| Vendor Selection |
|---|
| Extensive expertise in locating all types of parts and supplies for current/outdated equipment including pumps, compressors, seals, bearings, DDC electronic parts, etc. |
| Marketing Experience |
|---|
| He successfully obtained many projects for the US Navy at New London, CT by attending SBA training and then marketing his services. |
Fields of Expertise
air conditioning, air duct, control system, air-conditioning equipment, electromechanical control system, control system performance evaluation, electric switch, energy-efficient control system, flame sensor, flow sensor, heating, ventilating, and air-conditioning equipment, pressure sensor, direct digital control, building energy management, conservation of energy, energy analysis software, energy auditing, energy efficiency, refrigerant sensor, sensor, temperature sensor, thermostat, velocity sensor, automation control, climate control, HVAC safety, energy management