Large industrial spaces require precise control of temperature, relative humidity, dust, and VOC concentration. These spaces typically include various HVAC units, such as Make-Up Air Handling Units (MAUs), Air Handling Units (AHUs), Ventilation Units (VHUs), and exhaust systems. The comprehensive air conditioning system for these environments is referred to as Industrial Air Conditioning (IAC).

IAC is critical for maintaining environmental quality and production standards, and it represents the primary energy consumer in industrial settings. The PSP-IAC is a universal plug-and-play (PnP) control system designed specifically for industrial air conditioning systems.

The PSP-IAC supports up to 20 large spaces, each accommodating:

1. Up to 10 MAUs for outside air treatment
2. Up to 10 VHUs for temperature control
3. Up to 10 AHUs for temperature and relative humidity control
4. Up to 10 exhaust systems for VOC control
5. Up to 10 spot exhaust systems for localized pollution control

The PSP-IAC system comprises three levels of controllers: PSP, AIM, and Digi.

1. PSP: The primary controller manages environmental control across the entire space from the main control station. It processes, stores, and displays data from subsystems (MAUs, VHUs, AHUs, VTs, VTSs) and optimally coordinates their operation. The PSP communicates with a supervisory controller via an internal or static IP address.
2. AIM Controllers: These act as supervisory controllers for specific subsystems:
   1. AIM-MAU: for make-up air handling units
   2. AIM-AHU: for air handling units
   3. AIM-VHU: for recirculation air handling units
   4. AIM-VT: for exhaust ventilation units These virtual controllers are integrated within the main control station.
3. Digi Controllers: These are individual equipment controllers located near each piece of equipment:
   1. Digi-MAU: for make-up air handling units
   2. Digi-AHU: for air handling units
   3. Digi-VHU: for recirculation air handling units
   4. Digi-VT: for exhaust ventilation units
   5. Digi-VTS: for spot exhaust units

Customers can purchase the PSP-IAC directly from Bes-Tech and hire local HVAC contractors for installation and setup. Bes-Tech engineers offer online support for installation and commissioning as needed.

The main control station connects all Digi controllers via a multi-port gateway, which can also link to existing controllers, requiring a special setup.

Bes-tech can provide customers turn-key projects as well. Call for details.

Implementing the PSP-IAC can lead to significant electricity cost savings, enhanced system reliability and safety, and extended lifespans for fans and valve actuators:

1. Precision Temperature Control: Maintain temperatures within ±1°F of the setpoint.
2. Precision Dew Point and Humidity Control: Control dew point within ±1°F or relative humidity within ±5%.
3. Uniform VOC Control: Ensure VOC levels meet standards.
4. Energy Savings: Reduce heating and cooling consumption costs by 35% to 65%.
5. Fan Cost Savings: Lower fan power consumption costs by 50% to 80%.
6. Extended Equipment Lifespan: Increase lifespan by over 5 years through efficient operation and reduced cycling.
7. Lower O&M Costs: Decrease operational and maintenance costs by 20% to 50%, mainly due to fewer fan and actuator failures.
8. Preventive O&M: Automated fault detection and diagnostics provide alerts for potential equipment failures.
9. Automated Failure Handling: PSP-IAC automatically redistributes the duties of failed equipment to minimize disruptions, allowing O&M staff to schedule repairs calmly.
10. Utility Incentives: Many utilities offer incentives for this technology. Consult local utility energy programs for details.

1. Plug, Set, and Play: Easy installation with minimal setup.
2. Retrofit Capability: Can be installed without impacting current operations or existing equipment.
3. New Plant Integration: Serves as a Building Automation System (BAS) for new installations.
4. Standalone or Integrated Operation: Features a local workstation for setup and a graphical interface, with standard data communication ports for integration with any supervisory system.

PSP-IAC utilizes AI technologies and engineering fundamentals to optimize industrial air handling system performance. Key principles include:

1. Ventilation Air Monitoring: VOC-based local ventilation reduces exhaust airflow, with accurate measurement provided by ROB-AFC and Digi-AFS.
2. Outside Air Control: Minimize outside air intake based on exhaust airflow, space pressure, and heating/cooling load conditions.
3. Integrated MAU and AHU Control: Coordination to avoid simultaneous heating/cooling and dehumidification/humidification.
4. On/Off Control: AI algorithms manage operational units based on N+1 principles and fan speed optimization to enhance reliability and safety.
5. Fan Speed Control: AI manages fan speeds to ensure uniform operation and minimize power consumption.
6. Dual Safety Protection: Motor doctor technology and virtual pressure sensors safeguard motors from various issues, reducing maintenance costs.

1. What benefits do PSP-IAC® offer Facility Owners? The PSP-IAC® provides project payback in under three years, significantly reduces O&M costs, and enhances system reliability and product quality.
2. Why do Facility Service Providers recommend PSP-IAC®? It helps them meet annual energy consumption reduction obligations while lowering O&M efforts and costs for their clients.
3. What should ESCOs and Energy Consultants know about PSP-IAC®? It is a key solution for performance contracting and energy retrofits in the commercial and industrial refrigeration market.
4. Why should MEP and BAS Contractors install PSP-IAC®? It can boost revenue without increasing headcount and improve opportunities for service contracts.
5. How does PSP-IAC® integrate with BAS systems? It integrates with any BAS system through native Modbus and/or other protocols.
6. Can PSP-IAC® reuse existing sensors and actuators? Absolutely!

Bes-Tech, Inc. Corporate Office:

6916 N 97 Circle
Bldg B, Suite J, Mailbox 13
Omaha, Nebraska 68122-3037
0: 402-502-2340 I F: 402-502-2283
www. Bes-Tech. net