HVAC Design Manual for Hospitals and Clinics [Ashrae] on *FREE * shipping on qualifying offers. Provides in-depth design recommendations and. W. Stephen Comstock. ASHRAE STAFF. Library of Congress Catalog-in- Publication Data. HVAC design manual for hospitals and clinics. – Second edition. Infection control experts have put together guidelines on hospital HVAC system (ASHRAE) “HVAC Design Manual for Hospitals and Clinics” includes this.

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HVAC Design Manual for Hospitals and Clinics

Provision of care can ashrrae greatly aided if spaces such as lobbies and meeting rooms have mechanical capabilities already in place that allow them to function as emergency treatment areas. Air changes shown are minimum values. I have included a list of current committee members and other contributors.

Maintenance shops, such as woodworking, painting, and welding, may have environmental control problems as serious as those of medical operations spaces. The results of tests are recorded manually on paper forms or electronically and are transmitted on paper forms, by electronic means, or by voice communication. Microorganisms carried in this manner can be dispersed widely by air currents and may become inhaled by a susceptible host within the same room or at a distance from the source patient, depending on environmental factors.

Volumetric flow rate VFR criteria. Other cleaning, sanitizing, laundering, disinfection, and general good housekeeping practices are observed throughout the health care facility. The operation of an Emergency Department follows a fairly standard pattern. Upper-level room UVGI arrangements are available that continuously irradiate the upper areas of a room but avoid direct radiation of the lower, occupied levels, where the radiation could be harmful.

These rooms shall be protected with HEPA filters at It also gives insight into ongoing research into ventilation rates and air distribution that may result in changes in the future. The Blood Transfusion Laboratory is responsible for the storage and dispensing of blood components, for patient sample testing, and the preparation of frozen red cells and other specialized components.

See Chapter 4, Section 4. These satellites stock a supply of the medications most frequently used by the departments they serve. The research used both numerical and experimental techniques. A hospital may also offer classes for expectant parents in alternative birthing techniques.


Infection can be introduced by the instruments; therefore, sterilization of equipment, skin preparation, and draping are important. Keep intakes well above ground level, to avoid contamination from such sources as wet soil or piled leaves and to avoid standing water or snowdrifts.

HVAC Design Manual for Hospitals and Clinics

Environmental Control for Specific Medical Functions. HEPA filter is filtration with removal efficiencies of Engineering Services requires space for maintenance shops, for storage of maintenance materials, clinnics for administrative support. Typical criteria for HVAC design include indoor and outdoor environmental design conditions, outside and total air change requirements, economic considerations for equipment selection, requirements for redundancy or backup equipment capacity, solar characteristics, room pressure relationships, filtration, and other criteria needed for systems and equipment selection and sizing.

Indoor air quality in health care settings must incorporate considerations for infectious and other airborne contaminants. Specialty hospitals, such as cancer centers, centers for women and children, or mental health centers, define themselves by the type of services provided. Health care facilities are environments of controlled hazards.

Level II NICUs are also regulated in most areas; however, their frequency is much greater, and many hospitals that offer obstetric service have at least a few Level II beds. It is a service characterized by rapid technological change, increasing specialization, and significant capital investment. A record is maintained for each inpatient and for certain outpatients, such as those who visit the Emergency or Outpatient Surgery departments.

Minimum total room airflow rates combined outside air and recirculation are also often mandated by codes or criteria, based upon the cumulative dilution effect of central systems serving large numbers of spaces, the air-cleaning effectiveness of high efficiency filtration, or the minimum flow required to ensure good air mixing and comfort. Coughing is induced by the insertion of the instrument and by the procedures involved.

HEPA filter absolute filter high efficiency particulate air filter. General guidance that should be observed for all projects includes the following.

There are three typical categories of patient care units see related terms. Other factors desigh data that influence the HVAC design, such hvax envelope and equipment insulation, glazing characteristics, occupancy schedules, and ventilation or conditioning requirements for special equipment or processes, may be provided by specific project documentation or may require investigation by the designer.

Load Calculations and Equipment Heat Gains This appendix is not intended to duplicate any of the chapters in the ASHRAE Handbook—Fundamentals on air-conditioning load calculations but rather to highlight the specific janual of cooling and heating load calculations for health care facilities.


The unit dose system uses presorted, individually packaged doses for each patient. The cough droplets can contain highly infectious and resistant organisms as well as M. The chapter is intended to promote uniformity of usage and consistency in communication relating to the mechanical design of hospitals and the major technical issues.

Outbuildings may be employed for storing hazardous liquids, vehicles, and fuel-driven equipment. The administrator generally supervises a second-level tier of managers responsible for patient services, ancillary services, logistical, and other support services.

The satellite system includes small pharmacy units at inpatient nursing units and in certain ancillary departments, such as Emergency and Surgery.

Tests are performed on the specimens according to the specific orders of physicians or according to standing orders. Atlanta, GA www. Provides minor surgical procedures performed under topical, local, or regional anesthesia without preoperative sedation.

The following are considered boundaries of the sterile field in surgery: After admission, the department is responsible for labor and for delivery. A separate unit, which usually falls within the administrative purview of Engineering Services, inspects, tests, and repairs certain types of medical equipment. The HVAC design must ensure that the required?

New ASHRAE reference guides hospital HVAC design

Catheterization labs are normally associated with open-heart surgery programs. The HVAC system is one of several tools and processes used in the control of infection. Some medical and hospital equipment such as radiation therapy requires a dedicated not shared with other loads supply main utility connection, separate from utilities supplied to the general area. Ultraviolet radiation is that portion of hospigals electromagnetic spectrum described by wavelengths from to nm.

Ultraviolet germicidal irradiation is that portion of the electromagnetic spectrum described by wavelengths hpspitals to nm. Filtering levels also may be required. The anteroom would have ventilation control to minimize the effects of airborne spread of disease by manipulating door closure and ventilation while protecting the patient from common airborne disease.