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James M. Tinjum
University of Wisconsin-Madison
78Publications
11H-index
545Citations
Publications 78
Newest
#1Ayse Ozdogan Dolcek (Balıkesir University)H-Index: 1
#2James M. Tinjum (UW: University of Wisconsin-Madison)H-Index: 11
Abstract Within the heating, ventilation, and air conditioning (HVAC) sectors, ground coupled heat pumps (GCHPs) offer a potentially economical, low-carbon energy approach to lowering of the global energy budget. This study investigates the performance of a conventional vertical GCHP configuration with three boreholes (VERT), a conventional horizontal GCHP (HORZ), an unconventionally deep (300 m) single borehole GCHP (SING) system, and a conventional split natural gas air conditioning unit (NGAC...
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#1Abdullah H Alsabhan (KSU: King Saud University)H-Index: 1
#2Dante Fratta (UW: University of Wisconsin-Madison)H-Index: 14
Last.Tuncer B. Edil (UW: University of Wisconsin-Madison)H-Index: 38
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#1Andrew J. StumpfH-Index: 7
#2Yu-Feng LinH-Index: 8
Last.Scott M. FraileyH-Index: 10
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#1Adam McDaniel (UW: University of Wisconsin-Madison)H-Index: 2
#2James M. Tinjum (UW: University of Wisconsin-Madison)H-Index: 11
Last.Lauren K. Thomas (UW: University of Wisconsin-Madison)H-Index: 1
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Abstract A fiber optic distributed thermal response test (DTRT) conducted in well-documented heterogeneous geology is combined with laboratory thermophysical measurements of cores and novel data analysis techniques to provide a detailed description of variability in subsurface heat transfer. The results of this study show that appreciable variation in subsurface heat flow exists and can be quantified in a lithological context, which may aid in the optimization of future geothermal borefield desi...
1 CitationsSource
#1Tirupan MandalH-Index: 6
#2Tuncer B. Edil (UW: University of Wisconsin-Madison)H-Index: 38
Last.James M. Tinjum (UW: University of Wisconsin-Madison)H-Index: 11
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Flexural and resilient properties (flexural strength, flexural modulus, fatigue cracking, and resilient modulus) of common cementitiously stabilised materials (CSMs) in pavement systems are presented in this paper. These properties are critical parameters for pavement analysis to determine stress/strain and thus, pavement performance prediction. Four materials (sand, gravel, silt, and clay) and four binders (cement, lime, class C fly ash, and a combination of lime and class F fly ash) were studi...
6 CitationsSource
#1Kuo Tian (GMU: George Mason University)H-Index: 3
#2Craig H. Benson (UVA: University of Virginia)H-Index: 8
Last.James M. Tinjum (UW: University of Wisconsin-Madison)H-Index: 11
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Abstract The impact of α and β radiation on antioxidant depletion in smooth high-density polyethylene (HDPE) geomembranes (GMs) is described. Smooth HDPE GMs having different thickness (0.04-mm, 0.1-mm, 0.2-mm) were created by mechanically pulverizing sections of 2-mm-thick smooth HDPE GM and extruding the polymer at different thicknesses using a film blowing machine. The 2-mm-thick smooth HDPE GM was also used in the experiments. HDPE GM specimens were exposed to sealed sources of 241Am and 99T...
2 CitationsSource
#1Jongwan Eun (NU: University of Nebraska–Lincoln)H-Index: 1
#2James M. Tinjum (UW: University of Wisconsin-Madison)H-Index: 11
Last.Tuncer B. Edil (UW: University of Wisconsin-Madison)H-Index: 38
view all 4 authors...
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#2Mehmet YilmazH-Index: 1
Last.Dante FrattaH-Index: 14
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#1Adam McDanielH-Index: 2
#2James M. Tinjum (UW: University of Wisconsin-Madison)H-Index: 11
Last.Dante Fratta (UW: University of Wisconsin-Madison)H-Index: 14
view all 4 authors...
Distributed Temperature Sensing (DTS) is a technique that uses the interaction of laser pulses with silica to continuously sense temperature along the length of fiber-optic cables. The temporal and spatial resolution of DTS makes it an excellent technique for monitoring the performance of district-scale geothermal exchange borefields. A dynamic, double-ended calibration routine developed in response to site-specific challenges and constraints (i.e., more than 5 km, many splices, different fiber ...
1 CitationsSource
#1Adam McDaniel (UW: University of Wisconsin-Madison)H-Index: 2
#2Dante Fratta (UW: University of Wisconsin-Madison)H-Index: 14
Last.David J. Hart (University of Wisconsin–Extension)H-Index: 10
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Abstract Fiber optic (FO) distributed temperature sensing (DTS) was used for long-term monitoring of a 280-m by 360-m geothermal exchange borefield with 2596 boreholes to quantify the role of groundwater flow and thermophysical properties on subsurface heat transfer and storage. Most district-scale borefields are subject to a sustained imbalance in heating or cooling loads and experience yearly subsurface temperature increases that may, without corrective action, lead to diminished borefield per...
1 CitationsSource
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